Calculator of Air Downloads & RevenueCalculator of Air · App Store
Not in any tracked top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
Developeryoshihito sakagami
CategoryProductivity
PriceFree
Released
Rating★ 3.8 (30)
Version1.2.3
Age rating4+
First seen by us
24 Oct 2026
24 Oct 2026Full timeline · 3 events
- 🆕Calculator of Air first spotted by AppInsiderJapan (found via developer)
- 📦Calculator of Air version 1.2.3- 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.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below −150 °C / -238°F ).
- Fixed a bug in the exception handling logic.… more - 🆕Calculator of Air released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
3.8 ★
30 ratings
Measured
Calculator of Air on the App Store
App details
App ID
1112518507
Publisher
yoshihito sakagami
On the store since
May 2016
10 years on the store
Minimum OS
iOS 15.6+
iPhone 6s and later
Devices
iPhone · iPad
Content rating
4+
Languages
3
EN JA ZH
Size
7 MB
Also listed in
Utilities
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
3.8 ★
30 ratings
Measured
Ratings
30
Measured
About Calculator of Air
This is a psychrometric (moist air) calculation app used in over 20 countries worldwide.
It allows you to quickly and easily calculate humidity-related properties with a calculator-like interface.
The app adopts the Wexler–Hyland formulation combined with numerical analysis, providing highly accurate and stable results even under extreme atmospheric conditions.
Supported parameters
The following six parameters are supported:
* Dry-bulb temperature
* Wet-bulb temperature
* Dew point temperature
* Relative humidity
* Humidity ratio
* Enthalpy
By entering any two of these parameters, all remaining values are calculated automatically.
For example, you can determine the dry-bulb temperature when the dew point and relative humidity are known.
Ideal for HVAC design, cleanroom management, and industrial drying processes where precision is non-negotiable.
When used together with the companion app “HumidCalc”, additional air-property parameters can be viewed
(please refer to the companion app description for details).
■ Input range and safety checks
* Temperature: -273.15 °C to 99.97 °C (-459.67 °F to 211.95 °F)
* Relative Humidity: 0 %RH to 100 %RH
* Atmospheric pressure is fixed at the standard atmospheric pressure (1013.25 hPa / 29.92 inHg).
If physically invalid values are entered(e.g., wet-bulb temperature higher than dry-bulb temperature), an error message is displayed before calculation is executed.
■ Additional features
* Supports both Celsius (°C) and Fahrenheit (°F)
* Toggleable click sound
* Available in Japanese, English, and Traditional Chinese
■ Memory function
After performing a calculation, tapping one of the following buttons(Dry-bulb, Wet-bulb, Dew point, Relative humidity, Absolute humidity, or Enthalpy) stores that value for subsequent calculations.
By using this function, continuous air-state calculations are possible.
For example, when outdoor temperature and humidity and indoor temperature are known(assuming no latent heat load), you can first calculate and store the outdoor dew point, then input the indoor temperature to easily obtain the indoor humidity.
■ Disclaimer
1. Recommended operating temperature range is approximately 0 °C to 40 °C.
Extremely unusual conditions may result in inaccurate calculations.
2. Minor numerical errors may occur due to floating-point arithmetic.
3. The developer assumes no responsibility for any damages resulting from the use of this app.
It allows you to quickly and easily calculate humidity-related properties with a calculator-like interface.
The app adopts the Wexler–Hyland formulation combined with numerical analysis, providing highly accurate and stable results even under extreme atmospheric conditions.
Supported parameters
The following six parameters are supported:
* Dry-bulb temperature
* Wet-bulb temperature
* Dew point temperature
* Relative humidity
* Humidity ratio
* Enthalpy
By entering any two of these parameters, all remaining values are calculated automatically.
For example, you can determine the dry-bulb temperature when the dew point and relative humidity are known.
Ideal for HVAC design, cleanroom management, and industrial drying processes where precision is non-negotiable.
When used together with the companion app “HumidCalc”, additional air-property parameters can be viewed
(please refer to the companion app description for details).
■ Input range and safety checks
* Temperature: -273.15 °C to 99.97 °C (-459.67 °F to 211.95 °F)
* Relative Humidity: 0 %RH to 100 %RH
* Atmospheric pressure is fixed at the standard atmospheric pressure (1013.25 hPa / 29.92 inHg).
If physically invalid values are entered(e.g., wet-bulb temperature higher than dry-bulb temperature), an error message is displayed before calculation is executed.
■ Additional features
* Supports both Celsius (°C) and Fahrenheit (°F)
* Toggleable click sound
* Available in Japanese, English, and Traditional Chinese
■ Memory function
After performing a calculation, tapping one of the following buttons(Dry-bulb, Wet-bulb, Dew point, Relative humidity, Absolute humidity, or Enthalpy) stores that value for subsequent calculations.
By using this function, continuous air-state calculations are possible.
For example, when outdoor temperature and humidity and indoor temperature are known(assuming no latent heat load), you can first calculate and store the outdoor dew point, then input the indoor temperature to easily obtain the indoor humidity.
■ Disclaimer
1. Recommended operating temperature range is approximately 0 °C to 40 °C.
Extremely unusual conditions may result in inaccurate calculations.
2. Minor numerical errors may occur due to floating-point arithmetic.
3. The developer assumes no responsibility for any damages resulting from the use of this app.
Latest updates
1.2.3
- 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.
- Improved the numerical analysis algorithms, resulting in faster calculations and accurate computation of relative humidity and dew point even at extremely low temperatures (below −150 °C / -238°F ).
- Fixed a bug in the exception handling logic.
