# AirCalc_ vs Middo

The clearest difference is price: Middo at Free against AirCalc_'s $0.99. Middo also leads on iOS requirement (13.4 vs 15.0). AirCalc_'s advantage is chart position (#164 vs unranked) and device support. On in-app purchases there is nothing between them.

Middo is free to download; AirCalc_ costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | AirCalc_ | Middo |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 3 months | — |
| Monetization | Paid | — |
| Best chart rank | **#164** | — |
| Size | 24 MB | 24 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [AIR DESIGN, INC.](https://appshunter.io/developer/923430781) | [Dudaji Vn](https://appshunter.io/developer/1737149726) |

## What reviewers say

### AirCalc_

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

**Currently charting:** #164 Top Paid · Productivity (US App Store)

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


### Middo

[App page](https://appshunter.io/ios/app/middo/id6479731975)

**In-app purchases:** none


## Frequently asked questions

### Is AirCalc_ free?

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

### Is Middo free?

Middo is free to download, with no in-app purchases.

---

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