# 回転数チェッカー vs 端玉計算

The clearest difference is update cadence: 端玉計算 at every 2 months against 回転数チェッカー's every 5 months. 回転数チェッカー's advantage is iOS requirement (9.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

回転数チェッカー ships an update every 5 months, 端玉計算 every 2 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 回転数チェッカー | 端玉計算 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Size | 8 MB | 6 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Airwire products.](https://appshunter.io/developer/471910489) | [S K S, K.K.](https://appshunter.io/developer/1703432739) |

## What reviewers say

### 回転数チェッカー

[App page](https://appshunter.io/ios/app/id882279039)

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

**In-app purchases:** none


### 端玉計算

[App page](https://appshunter.io/ios/app/id6477461892)

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

**In-app purchases:** none


## Frequently asked questions

### Is 回転数チェッカー free?

回転数チェッカー is free to download, with no in-app purchases.

### Is 端玉計算 free?

端玉計算 is free to download, with no in-app purchases.

### Do 回転数チェッカー or 端玉計算 have ads?

Both 回転数チェッカー and 端玉計算 show ads.

### Which is updated more often, 回転数チェッカー or 端玉計算?

回転数チェッカー ships an update every 5 months, and 端玉計算 every 2 months. Most recently, 回転数チェッカー was updated on October 29, 2026 and 端玉計算 on October 27, 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.*