# Lachic vs こどもサイズ帳

The clearest difference is update cadence: こどもサイズ帳 at weekly against Lachic's every 33 months. Lachic's advantage is iOS requirement (13.0 vs 17.6). 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.

Lachic ships an update every 33 months, こどもサイズ帳 weekly. The most recent releases landed on October 4, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Lachic | こどもサイズ帳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Weekly** |
| Size | 3 MB | 9 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Naoya Takahashi](https://appshunter.io/developer/1301211980) | [Mami Kawai](https://appshunter.io/developer/1890495943) |

## What reviewers say

### Lachic

[App page](https://appshunter.io/ios/app/lachic/id1634154536)

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Lachic free?

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

### 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.

### Do Lachic or こどもサイズ帳 have ads?

Neither Lachic nor こどもサイズ帳 shows ads.

### Which is updated more often, Lachic or こどもサイズ帳?

Lachic ships an update every 33 months, and こどもサイズ帳 weekly. Most recently, Lachic was updated on October 4, 2026 and こどもサイズ帳 on October 12, 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.*