Calculate Comfort

Calculate Comfort

Psychrometer ℃alc

FreeOffers In-App Purchases

4.1for iPhone, iPod touch
18 Ratings
10.1 MB
Mar 1, 2022
Update Date
Age Rating
Age Rating
Apps in this category do not contain restricted content.
Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.
Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.
You must be at least 17 years old to access this App.
Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.
Calculate Comfort Screenshots
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About Calculate Comfort

This app is an app that calculates comfort. It calculates heat, cold, dryness and moisture and tells you the comfortable range.You can easily change the value with the dial, and the temperature is displayed in color in an easy-to-understand manner.
By inputting either temperature and humidity, dew point temperature or wet-bulb temperature, the following air conditions can be calculated accurately.
Relative Humidity %RH
Dew Point Temperature ℃DP(Frost point ℃FP)
Wet bulb temperature ℃WB
Mixing ratio (Humidity ratio) g/kg
Absolute Humidity g/m³
Specific volume m³/kg
Enthalpy kJ/kg
Atmospheric Pressure hPa
Vapor pressure hPa
Saturated Vapor Pressure hPa
Temperature–humidity index
Good display ( 18〜28℃ / 40〜70%)
By tapping the input switching icon, you can switch between relative humidity, dew point temperature, and wet-bulb temperature.
Tap the temperature icon to automatically enter the temperature from the weather information. Please allow the use of location information.(OpenWeatherMap Update interval120min)
Tap the reset icon to return to the default value. (This is the initial value of temperature and humidity set on the setting screen. The psychrometer is also reset to the Asssmann type.)
Tap the setting icon to move to the setting screen.
Setting screen
By tapping the barometric pressure icon, the value is acquired from the internal barometric pressure sensor and high-precision calculation is performed. Standard atmospheric pressure is usually sufficient.
When using a psychrometer (wet bulb input), select from three types.
Asssmann…Aspirator psychrometer. It is a forced ventilation type.
Wall…August psychrometer.Simple type without forced ventilation.Wall-mounted.
Sling…Sling Psychrometer.Type that swings around by hand.
Tap the reset icon or outside air icon to return to the Asssmann type. Except for the Asssmann type, only wet-bulb input is possible.
When the temperature drops below freezing, the wet-bulb freezing judgment switch will be displayed, so switch according to the wet-bulb condition (excluding the Sling type. Forcibly freezing judgment at -10℃ or lower)

The following features are added in the Pro Version.
○ Remove ads
Remove top ads and ads on the settings screen.
○ Dew point temperature display below freezing point
When the dew point temperature is below freezing and switching displayed in the frost point temperature (℃FP), but the dew point temperature (℃DP) is also displayed.
○ Unit conversion
A unit conversion function is added. Tap the icon to switch between SI unit (Celsius ℃) and US unit (Fahrenheit ℉).
○ Output function
Output function is added. When you tap the icon, the calculation result will be output as text by e-mail.
The SONNTAG formula is used to calculate the saturated water vapor pressure. The formulas for each water vapor pressure are SPRUNG and FERREL. Relative humidity is calculated according to WMO. (The denominator of the formula is calculated by the saturated vapor pressure of supercooled water)
This app does not measure the value of your current location. Get weather information. Atmospheric pressure gets the value of the internal sensor.
Please note that the minimum digit will be different due to calculation processing such as rounding.
We make every effort to ensure the accuracy of the calculation results, but we do not guarantee the accuracy. Please note that we are not responsible for any damages, losses, disadvantages, etc. that occur when using the product.
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What's New in the Latest Version 4.1

Last updated on Mar 1, 2022
Old Versions
AppTrackingTransparency compatible
Change of comfort display
Accuracy improvement of absolute humidity calculation
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Version History
Mar 1, 2022
AppTrackingTransparency compatible
Change of comfort display
Accuracy improvement of absolute humidity calculation
Apr 21, 2021
Improved user interface. Addition of Pro Version.
Jun 10, 2020
Added psychrometer type.
If you use a psychrometer, please choose from 3 types.
(When not using, please use it as it is as a Assmann.)
Asssmann ... Aspirator psychrometer. It is a forced ventilation type.
Simple ... August psychrometer.Old type without forced ventilation.Wall-mounted.
Sling ... Sling Psychrometer.Type that swings around by hand.
(If you press the reset button or the outside air button, it will return to the ventilation type. With the exception of the ventilation type, only wet bulb input is possible.)

Changed the dew point(°CDP) temperature display below freezing to the frost point(°CFP) temperature display.
Jan 23, 2020
Dark mode support.
Bug fix of dew point temperature input below freezing point.
Improve back calculation accuracy of wet-bulb temperature.
Other display bug fixes.
Jun 4, 2018
Temperature and humidity standards now be displayed.
When the temperature falls between 17 ° C~28 ° C. relative humidity of 40%~70%
A good mark will be displayed.
Mar 23, 2018
It corresponds to iOS 11. It corresponds to iPhoneX.
Dial input is now more convenient.
Fixed bug relative humidity and dew point temperature in below freezing.
Switching display of icing and overcooling status in wet bulb input mode.
Calculation of over-saturated air. (Humidity can be calculated over 100%.)
Localized in German, Russian, Italian, French,Indonesian,Thai
Jun 28, 2017
Display comfort in color.Add reset button. The value can be set.
Fixed minor bugs, such as when not recalculated by dialing.
Mar 16, 2017
Equipped with input Dial. The value input became smooth and intuitive.
Added input mode. Added relative humidity input mode and dew point temperature input mode.input mode.
As usual, you can also calculate in wet bulb input mode.
Added open air input. You can automatically enter outside temperature and humidity from the weather information.(Please allow use of location information.)
Add absolute humidity conversion. Displays the weight absolute humidity and volume absolute humidity by switching.
Addition of saturated vapor pressure indication. The calculation formula uses exact SONNTAG expression.
In addition, we have added some minor improvements.
higher versions like iOS 10
Jan 14, 2016
iOS9 support
Upgrade planned.Coming soon.
Jun 10, 2015
Add clear button(AC) and the tag button (<>).
You can now be quickly calculated.
May 4, 2015
Temperature–humidity index (Discomfort index) added
Jan 9, 2015
Add Information view
Adjustment etc
Nov 4, 2014
Supports for the barometric pressure sensor. iPhone6,iPhone 6 Plus
Feb 4, 2014
change to custom keypad
Dec 1, 2013
Minor bug fixes
Nov 27, 2013
The minus display fix in 0 degrees of dew point
Sep 29, 2013
iOS 7 Version
Aug 22, 2013
Bug fixes dew point temperature is not reset to re-calculation.
The change in the pressure unit hPa.
Changing the UI.
Jul 23, 2013
Chinese localization
Apr 18, 2013
Bug fixes atmospheric input range and typo
Feb 25, 2013

Calculate Comfort FAQ

Click here to learn how to download Calculate Comfort in restricted country or region.
Check the following list to see the minimum requirements of Calculate Comfort.
Requires iOS 13.0 or later.
iPod touch
Requires iOS 13.0 or later.
Calculate Comfort supports English, French, German, Indonesian, Italian, Japanese, Korean, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish
Calculate Comfort contains in-app purchases. Please check the pricing plan as below:
Pro Version

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