HumidCalc1.2.8
Publisher Description
＊Weather data supported＊
A versatile humidity calculation app for everyone from general users to engineers - also suitable for agricultural applications.
This app allows you to easily calculate indicators such as the Discomfort Index, WBGT (estimated heat stress index), Volumetric Absolute Humidity (an important indicator for influenza prevention), and Humidity Deficit (HD) used in agriculture, using weather data.
You can also calculate a wide range of air properties from dry-bulb temperature (normal air temperature) and wet-bulb temperature obtained from ventilated psychrometers such as the Assmann psychrometer.
Atmospheric pressure can be entered manually.
The app supports 12 indicators across 16 calculation items, and unit conversion between Celsius/Fahrenheit and SI/Imperial units can be performed instantly by switching the temperature unit setting.
■ High-Precision Calculation Engine
This app uses the Wexler-Hyland equations combined with numerical analysis, enabling highly accurate and stable calculations across a wide range of environmental conditions.
■ Calculable Indicators
* Wet Bulb Temperature
* Dew Point Temperature
* Frost point temperature
* Relative Humidity
* Humidity Ratio(Absolute Humidity)
* Mass-based absolute humidity
* High-resolution mass-based absolute humidity
* Volumetric absolute humidity
* Humidity Deficit (HD)
* Vapor Pressure Deficit (VPD)
* Enthalpy
* Specific Volume
* Saturation Vapor Pressure
* Water Vapor Partial Pressure
* Boiling Point of Water
* WBGT (Estimated value)
* Discomfort Index (DI)
Supplementary Notes on WBGT & Discomfort Index
Outdoor WBGT is defined as:
WBGT = 0.7 Tnw + 0.1 Td + 0.2 Tg (°F)
Since globe temperature (Tg) is not an input parameter, it is estimated from dry-bulb temperature (Td) using:
Tg = 1.45 Td - 27.162 (°F)
Td and Tg show a strong correlation (n = 17,376, R² = 0.919).
Natural wet-bulb temperature (Tnw) is obtained by converting the measured wet-bulb temperature from an Assmann psychrometer to natural conditions, assuming a wind speed of 98.4 fpm (0.5 m/s) or less.
Details of this conversion algorithm are omitted.
The Discomfort Index (DI) is calculated as:
DI = 0.4 x (Td + Tw) + 15 (°F).
■ Weather Data & Sensors
By tapping the Weather Data button, you can obtain current atmospheric pressure, dry-bulb temperature, and wet-bulb temperature.
On devices equipped with a barometric pressure sensor, pressing the MEAS button allows direct pressure measurement.
Wet-bulb conditions can be set to Normal or Frozen (effective below freezing).
Corrected values can also be displayed for non-ventilated psychrometers such as the August psychrometer (ventilated types recommended for accuracy).
■App Ecosystem Integration
You can directly receive calculated dry-bulb and wet-bulb temperatures from the companion app “Calculator of Air”.
(Please note that calculations must be performed in Calculator of Air before data can be transferred.)
By combining HumidCalc with Calculator of Air, you can, for example, derive multiple air properties from known Enthalpy and Humidity Ratio values.
■Input Ranges
* Dry-Bulb & Wet-Bulb Temperature: -22°F to 122°F (-30°C to 50°C)
* Atmospheric Pressure: 17.72 inHg to 73.09 inHg (600 hPa to 2475 hPa)
* Dew Point: -58°F to 122°F (-50°C to 50°C)
* Relative Humidity: 0% to 100% (1% steps)
■Notes
When using an August psychrometer, calculations assume an air velocity at the sensing element of 98.4 fpm (0.5 m/s) or less.
As a result, calculated values may differ from those listed in humidity tables included with commercial August psychrometers.
■Disclaimer
1. Please use values within reasonable temperature ranges (approximately 32°F to 104°F / 0°C to 40°C). Extremely unusual inputs may produce inaccurate results.
2. While every effort has been made to ensure high precision, minor errors may occur due to floating-point limitations.
3. The developer assumes no responsibility for any damages resulting from the use of this app.
Version History - Added "Auxiliary Input Mode," allowing numeric input for Dew Point Temperature and Relative Humidity.
In addition to the standard input ("Atmospheric Pressure × Dry-Bulb Temperature × Wet-Bulb Temperature"), you can now enter values using two distinct modes:
• Atmospheric Pressure × Dry-Bulb Temperature × Dew Point Temperature
• Atmospheric Pressure × Dry-Bulb Temperature × Relative Humidity
- Added Pictogram Indicators next to the WBGT (Estimated Value) and Discomfort Index numbers to help you visually check heatstroke risk and mugginess.
(For pictogram types and threshold values, please check the 9th and 10th screenshots.)
- Updated the ad format from standard Adaptive Banners to Collapsible Banners.
[Important: How to use the new "Auxiliary Input Mode" & Tip]
While this update adds support for Relative Humidity and Dew Point inputs, this app is designed to prioritize calculation based on the "Dry-Bulb Temperature × Wet-Bulb Temperature" combination.
Therefore, changes in the Dry-Bulb or Wet-Bulb temperatures will automatically update and recalculate the Dew Point and Relative Humidity values accordingly.
● Tip for accurate input:
Always enter and set the Dry-Bulb Temperature first.
If you change the Dry-Bulb Temperature later, any previously entered Relative Humidity or Dew Point values will be automatically recalculated to match the new temperature.
For a smooth experience, we recommend entering values from top to bottom, starting with Atmospheric Pressure! 1.2.8 Aug 13 - Changed the ad banner from a Smart Banner to an Adaptive Banner.
- Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.7 Apr 19 - Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.6 Mar 3 - Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.5 Mar 1 - Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.4 Feb 22 - Fixed a bug in the ad display logic.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.3 Feb 10 - Fixed minor bugs.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.2 Feb 3 - Fixed a bug in part of the calculation program for dew point and frost point temperatures in the extremely low-temperature range (below -238 °F).
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.1 Feb 3 - Updated some screenshots for the Taiwan market.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.0 Jan 21 - Fixed minor text issues in the app.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.1.9 Jan 13 - Added support for iOS 15.6 and later.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.1.8 Jan 6 - Partially corrected the description text in Japanese environment App Store.
- Changed partially text in first 5.5 inch screenshot. 1.1.7 03/27/2020 - Support for since iOS8.0.
- Fixed some bugs. 1.1.6 12/31/2019 - Bug fixes.
There was a bug where the application malfunction when acquisition of location information failed, so we corrected it.
(We also fixed the same problem when updating to Ver1.1.4, but since I could not completely solve the problem, we are fixing the same problem again.) 1.1.5 12/23/2017 - Bug fixes.
There was a bug where the application malfunction when acquisition of location information failed, so we corrected it. 1.1.4 12/21/2017 - Fix bug in when trying to acquire weather information when radio condition is bad, the application crashes. 1.1.3 06/05/2017 - Fixed minor bugs. 1.1.2 04/14/2017 - Was changed the icon design. 1.1.1 04/13/2017 - Fixed bugs the application name does not display properly in English environment.
- Inserted an advertisement of the sister application "Calculator of Air" in the application. 1.1.0 04/10/2017 - Minor Bug Fix.
Fixed when this App of use in iOS10 devices a problems occurrring that some of the text display strange by the when used for Japanese language environment or Traditional Chinese language environment. 1.0.9 03/20/2017 - Fixed of the bugs to abnormal screen occurring when it is receive Fahrenheit temperature data from the "Calculator of Air" . 1.0.8 03/07/2017 - The dry-bulb and wet-bulb temperatures picker view bug fixes were made.
- Other
Addition of discomfort index and WBGT glossary to "Description". 1.0.7 02/15/2017 - Minor bug fixes.
- Other
Addition of discomfort index and WBGT glossary to "Description". 1.0.6 01/04/2017 - Fixed the problem that the screen collapsed on some models. 1.0.5 11/14/2016 - Since the format of the received data of weather information has changed, now they support it.
- Other, fixes minor bugs. 1.0.4 11/08/2016
About HumidCalc
The company that develops HumidCalc is yoshihito sakagami. The latest version released by its developer is 1.2.8.
To install HumidCalc on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-15 and was downloaded 10 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the HumidCalc as malware if the download link is broken.
How to install HumidCalc on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the HumidCalc is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After HumidCalc is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
Program Details
System requirements
Download information
Pricing
Version History
version 1.2.8
posted on 2026-10-15
Version History - Added "Auxiliary Input Mode," allowing numeric input for Dew Point Temperature and Relative Humidity.
In addition to the standard input ("Atmospheric Pressure × Dry-Bulb Temperature × Wet-Bulb Temperature"), you can now enter values using two distinct modes:
• Atmospheric Pressure × Dry-Bulb Temperature × Dew Point Temperature
• Atmospheric Pressure × Dry-Bulb Temperature × Relative Humidity
- Added Pictogram Indicators next to the WBGT (Estimated Value) and Discomfort Index numbers to help you visually check heatstroke risk and mugginess.
(For pictogram types and threshold values, please check the 9th and 10th screenshots.)
- Updated the ad format from standard Adaptive Banners to Collapsible Banners.
[Important: How to use the new "Auxiliary Input Mode" & Tip]
While this update adds support for Relative Humidity and Dew Point inputs, this app is designed to prioritize calculation based on the "Dry-Bulb Temperature × Wet-Bulb Temperature" combination.
Therefore, changes in the Dry-Bulb or Wet-Bulb temperatures will automatically update and recalculate the Dew Point and Relative Humidity values accordingly.
● Tip for accurate input:
Always enter and set the Dry-Bulb Temperature first.
If you change the Dry-Bulb Temperature later, any previously entered Relative Humidity or Dew Point values will be automatically recalculated to match the new temperature.
For a smooth experience, we recommend entering values from top to bottom, starting with Atmospheric Pressure! 1.2.8 Aug 13 - Changed the ad banner from a Smart Banner to an Adaptive Banner.
- Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.7 Apr 19 - Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.6 Mar 3 - Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.5 Mar 1 - Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.4 Feb 22 - Fixed a bug in the ad display logic.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.3 Feb 10 - Fixed minor bugs.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.2 Feb 3 - Fixed a bug in part of the calculation program for dew point and frost point temperatures in the extremely low-temperature range (below -238 °F).
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.1 Feb 3 - Updated some screenshots for the Taiwan market.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.0 Jan 21 - Fixed minor text issues in the app.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.1.9 Jan 13 - Added support for iOS 15.6 and later.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.1.8 Jan 6 - Partially corrected the description text in Japanese environment App Store.
- Changed partially text in first 5.5 inch screenshot. 1.1.7 03/27/2020 - Support for since iOS8.0.
- Fixed some bugs. 1.1.6 12/31/2019 - Bug fixes.
There was a bug where the application malfunction when acquisition of location information failed, so we corrected it.
(We also fixed the same problem when updating to Ver1.1.4, but since I could not completely solve the problem, we are fixing the same problem again.) 1.1.5 12/23/2017 - Bug fixes.
There was a bug where the application malfunction when acquisition of location information failed, so we corrected it. 1.1.4 12/21/2017 - Fix bug in when trying to acquire weather information when radio condition is bad, the application crashes. 1.1.3 06/05/2017 - Fixed minor bugs. 1.1.2 04/14/2017 - Was changed the icon design. 1.1.1 04/13/2017 - Fixed bugs the application name does not display properly in English environment.
- Inserted an advertisement of the sister application "Calculator of Air" in the application. 1.1.0 04/10/2017 - Minor Bug Fix.
Fixed when this App of use in iOS10 devices a problems occurrring that some of the text display strange by the when used for Japanese language environment or Traditional Chinese language environment. 1.0.9 03/20/2017 - Fixed of the bugs to abnormal screen occurring when it is receive Fahrenheit temperature data from the "Calculator of Air" . 1.0.8 03/07/2017 - The dry-bulb and wet-bulb temperatures picker view bug fixes were made.
- Other
Addition of discomfort index and WBGT glossary to "Description". 1.0.7 02/15/2017 - Minor bug fixes.
- Other
Addition of discomfort index and WBGT glossary to "Description". 1.0.6 01/04/2017 - Fixed the problem that the screen collapsed on some models. 1.0.5 11/14/2016 - Since the format of the received data of weather information has changed, now they support it.
- Other, fixes minor bugs. 1.0.4 11/08/2016
version 1.2.7
posted on 2026-07-24
Version History - Changed the ad banner from a Smart Banner to an Adaptive Banner.
- Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.7 Apr 19 - Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.6 Mar 3 - Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.5 Mar 1 - Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.4 Feb 22 - Fixed a bug in the ad display logic.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.3 Feb 10 - Fixed minor bugs.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.2 Feb 3 - Fixed a bug in part of the calculation program for dew point and frost point temperatures in the extremely low-temperature range (below -238 °F).
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.1 Feb 3 - Updated some screenshots for the Taiwan market.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.2.0 Jan 21 - Fixed minor text issues in the app.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.1.9 Jan 13 - Added support for iOS 15.6 and later.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later. 1.1.8 Jan 6 - Partially corrected the description text in Japanese environment App Store.
- Changed partially text in first 5.5 inch screenshot. 1.1.7 03/27/2020 - Support for since iOS8.0.
- Fixed some bugs. 1.1.6 12/31/2019 - Bug fixes.
There was a bug where the application malfunction when acquisition of location information failed, so we corrected it.
(We also fixed the same problem when updating to Ver1.1.4, but since I could not completely solve the problem, we are fixing the same problem again.) 1.1.5 12/23/2017 - Bug fixes.
There was a bug where the application malfunction when acquisition of location information failed, so we corrected it. 1.1.4 12/21/2017 - Fix bug in when trying to acquire weather information when radio condition is bad, the application crashes. 1.1.3 06/05/2017 - Fixed minor bugs. 1.1.2 04/14/2017 - Was changed the icon design. 1.1.1 04/13/2017 - Fixed bugs the application name does not display properly in English environment.
- Inserted an advertisement of the sister application "Calculator of Air" in the application. 1.1.0 04/10/2017 - Minor Bug Fix.
Fixed when this App of use in iOS10 devices a problems occurrring that some of the text display strange by the when used for Japanese language environment or Traditional Chinese language environment. 1.0.9 03/20/2017 - Fixed of the bugs to abnormal screen occurring when it is receive Fahrenheit temperature data from the "Calculator of Air" . 1.0.8 03/07/2017 - The dry-bulb and wet-bulb temperatures picker view bug fixes were made.
- Other
Addition of discomfort index and WBGT glossary to "Description". 1.0.7 02/15/2017 - Minor bug fixes.
- Other
Addition of discomfort index and WBGT glossary to "Description". 1.0.6 01/04/2017 - Fixed the problem that the screen collapsed on some models. 1.0.5 11/14/2016 - Since the format of the received data of weather information has changed, now they support it.
- Other, fixes minor bugs. 1.0.4 11/08/2016 - When you measure the atmospheric pressure in the iPhone6 and iPhone6Plus, it was to display the indicator circle until the measurement results.
- Other, fixes minor bugs. 1.0.3 08/14/2016
version 1.2.6
posted on 2026-03-03
- Fixed a layout issue that occurred on some devices.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later.
version -
posted on 2020-10-12
version 1.1.7
posted on 2020-03-27
Mar 27, 2020 Version 1.1.7
- Partially corrected the description text in Japanese environment App Store.
- Changed partially text in first 5.5 inch screenshot.
version 1.1.6
posted on 2019-12-31
Dec 31, 2019 Version 1.1.6
- Support for since iOS8.0.
- Fixed some bugs.
version 1.2.3
posted on 1970-01-01
- Fixed a bug in the ad display logic.
- Updated to comply with the privacy requirements introduced in iOS 14 (IDFA and App Tracking Transparency).
- Optimized the UI for 6.5-inch displays on iPhone X and later models.
- Updated the AdMob advertising SDK.
- Added calculation and display support for frost point temperature.
- VPD (Vapor Pressure Deficit) is now displayed alongside humidity deficit values.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below -238°F / −150 °C).
(For temperature inputs below −22°F(−30 °C), please use the companion app “Calculator of Air”.)
Please note: This version is not compatible with older versions of the companion app “Calculator of Air” (version 1.1.4 or earlier).
Users who rely on app integration are kindly requested to update “Calculator of Air” to version 1.1.5 or later.
version 1.1.6
posted on 1970-01-01
2019年12月31日 Version 1.1.6
- Support for since iOS8.0.
- Fixed some bugs.
version 1.1.7
posted on 1970-01-01
2020. márc. 27. Version 1.1.7
- Partially corrected the description text in Japanese environment App Store.
- Changed partially text in first 5.5 inch screenshot.
