# AirCalc_ vs Chigiri Memo

The clearest difference is price: Chigiri Memo at Free against AirCalc_'s $0.99. AirCalc_'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Chigiri Memo is free to download; AirCalc_ costs $0.99 up front. Chigiri Memo sells 1 one-off in-app purchase. AirCalc_ asks for nothing beyond the download.

## The numbers

| Metric | AirCalc_ | Chigiri Memo |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | — |
| Monetization | Paid | — |
| Size | 24 MB | 35 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AIR DESIGN, INC.](https://appshunter.io/developer/923430781) | [Keiji Hirose](https://appshunter.io/developer/1896651015) |

## 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


### Chigiri Memo

[App page](https://appshunter.io/ios/app/chigiri-memo-split-notes/id6799854407)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is AirCalc_ free?

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

### Is Chigiri Memo free?

Chigiri Memo is free to download, with in-app purchases available.

### Do AirCalc_ or Chigiri Memo have ads?

Chigiri Memo shows ads; AirCalc_ does not.

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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.*