# 体重チェッカー vs Yakusoku.

The clearest difference is update cadence: Yakusoku. at weekly against 体重チェッカー's every 7 months. 体重チェッカー's advantage is iOS requirement (6.0 vs 17.0). 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.

体重チェッカー ships an update every 7 months, Yakusoku. weekly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 体重チェッカー | Yakusoku. |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Size | 5 MB | 1 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Yasuo Shiohata](https://appshunter.io/developer/757811551) | [Shosuke Sato](https://appshunter.io/developer/1709991841) |

## What reviewers say

### 体重チェッカー

[App page](https://appshunter.io/ios/app/id757811548)

**Features:** macOS Compatibility

**In-app purchases:** none


### Yakusoku.

[App page](https://appshunter.io/ios/app/yakusoku/id6762287005)

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

**In-app purchases:** none


## Frequently asked questions

### Is 体重チェッカー free?

体重チェッカー is free to download, with no in-app purchases.

### Is Yakusoku. free?

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

### Do 体重チェッカー or Yakusoku. have ads?

Neither 体重チェッカー nor Yakusoku. shows ads.

### Which is updated more often, 体重チェッカー or Yakusoku.?

体重チェッカー ships an update every 7 months, and Yakusoku. weekly. Most recently, 体重チェッカー was updated on November 1, 2026 and Yakusoku. on October 31, 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.*