# ことりにっき vs usagiDiary

The clearest difference is ads: usagiDiary at none against ことりにっき's shown. usagiDiary also leads on update cadence (fortnightly vs every 6 weeks). ことりにっき's advantage is iOS requirement (12.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. ことりにっき sells 1 one-off in-app purchase and usagiDiary sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ことりにっき ships an update every 6 weeks, usagiDiary fortnightly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ことりにっき | usagiDiary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/usagidiary/id1552918111/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 42.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 17 MB | 110 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Akira Sakagami](https://appshunter.io/developer/1438357557) | [RYUNOSUKE OTA](https://appshunter.io/developer/1552918113) |

## What reviewers say

### ことりにっき

[App page](https://appshunter.io/ios/app/id1438357558)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 有料オプション | $2.99 | one-time |


### usagiDiary

[App page](https://appshunter.io/ios/app/usagidiary/id1552918111)

Easily track your rabbit's daily health and care activities. Monitor food intake, weight, droppings, and more with customizable categories and a visual calendar. Get deeper insights with premium features for long-term health tracking.

**Highlights:** Daily health logging for rabbits, Customizable care categories, Calendar view of entries, Visual weight tracking chart, Support for multiple rabbits, Birthday and anniversary celebrations

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| usagi Diary Premium | $2.99 | per month |
| うさぎDiaryプロプラン | $5.99 | per month |
| usagi Diary Premium(Annual) | $19.99 | per year |
| うさぎDiaryプロプラン | $49.99 | per year |


## Frequently asked questions

### Is ことりにっき free?

ことりにっき is free to download, with in-app purchases available.

### Is usagiDiary free?

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

### Do ことりにっき or usagiDiary have ads?

ことりにっき shows ads; usagiDiary does not.

### Which is updated more often, ことりにっき or usagiDiary?

ことりにっき ships an update every 6 weeks, and usagiDiary fortnightly. Most recently, ことりにっき was updated on October 26, 2026 and usagiDiary on October 24, 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.*