# Handwrittennotes vs 空気線図Pro 湿り空気線図・空調計算

The clearest difference is in-app purchases: Handwrittennotes at none against 空気線図Pro 湿り空気線図・空調計算's 1. Handwrittennotes also leads on ads (none vs shown) and iOS requirement (8.0 vs 18.2). 空気線図Pro 湿り空気線図・空調計算's advantage is update cadence (every 3 days vs monthly). On price and device support there is nothing between them.

Both are free to download. 空気線図Pro 湿り空気線図・空調計算 sells 1 one-off in-app purchase. Handwrittennotes asks for nothing beyond the download.

Handwrittennotes ships an update monthly, 空気線図Pro 湿り空気線図・空調計算 every 3 days. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Handwrittennotes | 空気線図Pro 湿り空気線図・空調計算 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 days** |
| Size | 10 MB | 8 MB |
| Requires iOS | **8.0** | 18.2 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kiyoshi Koike](https://appshunter.io/developer/513590141) | [koichi hashimoto](https://appshunter.io/developer/1659408789) |

## What reviewers say

### Handwrittennotes

[App page](https://appshunter.io/ios/app/handwrittennotes-simple/id642249248)

**Features:** macOS Compatibility

**In-app purchases:** none


### 空気線図Pro 湿り空気線図・空調計算

[App page](https://appshunter.io/ios/app/pro/id6792616333)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム | $5.99 | one-time |


## Frequently asked questions

### Is Handwrittennotes free?

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

### Is 空気線図Pro 湿り空気線図・空調計算 free?

空気線図Pro 湿り空気線図・空調計算 is free to download, with in-app purchases available.

### Do Handwrittennotes or 空気線図Pro 湿り空気線図・空調計算 have ads?

空気線図Pro 湿り空気線図・空調計算 shows ads; Handwrittennotes does not.

### Which is updated more often, Handwrittennotes or 空気線図Pro 湿り空気線図・空調計算?

Handwrittennotes ships an update monthly, and 空気線図Pro 湿り空気線図・空調計算 every 3 days. Most recently, Handwrittennotes was updated on September 22, 2026 and 空気線図Pro 湿り空気線図・空調計算 on September 17, 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.*