AirCalc_ vs THERble
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AirCalc_
This app calculates the state of moist air using parameters like pressure, temperature, and humidity. It simplifies psychrometric diagram readings by allowing calculations with just three known values, assuming normal atmospheric pressure.
- Moist air state calculation
- Pressure, temperature, humidity input
- Specific enthalpy and volume calculation
- Simplified psychrometric diagram readings
- Adjustable pressure settings
- Assumed temperature range: -20°C to 90°C
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The state of moist air is shown by pressure, dry-bulb temperature, relative humidity, specific enthalpy, specific volume bulk, etc. These values can be calculated if each expression of relations shows three values. Usually, since pressure is used under normal atmospheric pressure in many cases, if this is set constant and two status values are given, it can calculate other values by calculation. By using this program, each status value read in the psychrometric diagram can usually be calculated easily. Use of the range of dry-bulb temperature DB-20℃ to 90℃ is assumed. Even if it exceeds this domain, calculation may be possible, but the error will be larger.
THERble
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オフィス執務者の快適性や、工場の作業者や屋外環境での人の温熱感を評価する温熱指標を、測定機器や気象データなどの物性値から計算し、評価することができます。また、計算結果を、アプリ内のボタンより、画像として保存することができます。 アプリの使い方でわからないことがあった際には、アプリ内コンテンツのHelpページを参照してください。
Screenshots
Verdict
The clearest difference is price: THERble at Free against AirCalc_'s $0.99. THERble also leads on iOS requirement (12.0 vs 15.0). AirCalc_'s advantage is update cadence (every 3 months vs every 16 months) and chart position (#178 vs unranked). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
THERble is free to download; AirCalc_ costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
AirCalc_ ships an update every 3 months, THERble every 16 months. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.
| Parameter | AirCalc_ | THERble |
|---|---|---|
| Price | $0.99 | Free — better |
| Positive reviews | 25.0% of reviews | — |
| Update frequency | Every 3 months — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #178 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 46 MB |
| Age rating | 4+ | 17+ |
| Developer | AIR DESIGN, INC. | SHIN NIPPON AIR TECHNOLOGIES CO.,LTD. |
In-app purchases
AirCalc_
No in-app purchases
THERble
No in-app purchases
