# AirCalc_ vs EngineerCalc

The clearest difference is update cadence: AirCalc_ at every 3 months against EngineerCalc's every 60 months. AirCalc_ also leads on price ($0.99 vs $1.99). EngineerCalc's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

AirCalc_ costs $0.99 and EngineerCalc $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AirCalc_ ships an update every 3 months, EngineerCalc every 60 months. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | AirCalc_ | EngineerCalc |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 60 months |
| Monetization | Paid | — |
| Size | 24 MB | 10 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AIR DESIGN, INC.](https://appshunter.io/developer/923430781) | [oskari saarinen](https://appshunter.io/developer/1234576917) |

## What reviewers say

### AirCalc_

[App page](https://appshunter.io/ios/app/aircalc/id923430782)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### EngineerCalc

[App page](https://appshunter.io/ios/app/engineercalc/id1454820389)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AirCalc_ free?

AirCalc_ costs $0.99, with no in-app purchases.

### Is EngineerCalc free?

EngineerCalc costs $1.99, with no in-app purchases.

### Do AirCalc_ or EngineerCalc have ads?

Neither AirCalc_ nor EngineerCalc shows ads.

### Which is updated more often, AirCalc_ or EngineerCalc?

AirCalc_ ships an update every 3 months, and EngineerCalc every 60 months. Most recently, AirCalc_ was updated on September 9, 2026 and EngineerCalc on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*