# こどもサイズ帳 vs せいくらべ

The clearest difference is ads: こどもサイズ帳 at none against せいくらべ's shown. せいくらべ's advantage is update cadence (daily vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

こどもサイズ帳 ships an update fortnightly, せいくらべ daily. Both last shipped on November 5, 2026.

## The numbers

| Metric | こどもサイズ帳 | せいくらべ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Daily** |
| Size | 10 MB | 7 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Mami Kawai](https://appshunter.io/developer/1890495943) | [Takahiro Kimura](https://appshunter.io/developer/6775796488) |

## What reviewers say

### こどもサイズ帳

[App page](https://appshunter.io/ios/app/id6767790620)

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

**In-app purchases:** none


### せいくらべ

[App page](https://appshunter.io/ios/app/id6777436455)

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

**In-app purchases:** none


## Frequently asked questions

### Is こどもサイズ帳 free?

こどもサイズ帳 is free to download, with no in-app purchases.

### Is せいくらべ free?

せいくらべ is free to download, with no in-app purchases.

### Do こどもサイズ帳 or せいくらべ have ads?

せいくらべ shows ads; こどもサイズ帳 does not.

### Which is updated more often, こどもサイズ帳 or せいくらべ?

こどもサイズ帳 ships an update fortnightly, and せいくらべ daily. Most recently, こどもサイズ帳 was updated on November 5, 2026 and せいくらべ on November 5, 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.*