# One &. vs うちの子けんこう手帳

The clearest difference is ads: うちの子けんこう手帳 at none against One &.'s shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. One &. sells 4 in-app purchases, starting at $0.99 per month and うちの子けんこう手帳 sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

One &. ships an update every 4 days, うちの子けんこう手帳 weekly. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | One &. | うちの子けんこう手帳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Weekly |
| Size | 49 MB | 46 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [KIYOKAZU KUROSAWA](https://appshunter.io/developer/1813710302) | [kai takayanagi](https://appshunter.io/developer/1886334495) |

## What reviewers say

### One &.

[App page](https://appshunter.io/ios/app/one-and/id6745878713)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free Plan Monthly | $0.99 | per month |
| One&. Plus Monthly | $1.99 | per month |
| Ad-Free Plan Yearly | $9.99 | per year |
| One&. Plus Yearly | $19.99 | per year |


### うちの子けんこう手帳

[App page](https://appshunter.io/ios/app/id6760806949)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $2.99 | per month |


## Frequently asked questions

### Is One &. free?

One &. is free to download, with in-app purchases available.

### Is うちの子けんこう手帳 free?

うちの子けんこう手帳 is free to download, with in-app purchases available.

### Do One &. or うちの子けんこう手帳 have ads?

One &. shows ads; うちの子けんこう手帳 does not.

### Which is updated more often, One &. or うちの子けんこう手帳?

One &. ships an update every 4 days, and うちの子けんこう手帳 weekly. Most recently, One &. was updated on September 21, 2026 and うちの子けんこう手帳 on September 10, 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.*