# Uchinoko Diary vs Petask デコれるTodo×シール帳

The clearest difference is ads: Petask デコれるTodo×シール帳 at none against Uchinoko Diary's shown. Uchinoko Diary's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Uchinoko Diary sells 1 one-off in-app purchase and Petask デコれるTodo×シール帳 sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Uchinoko Diary ships an update every 4 days, Petask デコれるTodo×シール帳 every 5 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Uchinoko Diary | Petask デコれるTodo×シール帳 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 5 days |
| Size | 231 MB | 22 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ota Sato](https://appshunter.io/developer/1895370516) | [Chihiro Omi](https://appshunter.io/developer/1856114249) |

## What reviewers say

### Uchinoko Diary

[App page](https://appshunter.io/ios/app/uchinoko-diary/id6763551724)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を非表示にする | $2.99 | one-time |


### Petask デコれるTodo×シール帳

[App page](https://appshunter.io/ios/app/petask-todo/id6781984655)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| コスメポーチパック | $0.49 | one-time |
| レトロ喫茶パック | $0.99 | one-time |
| ピクセルスイーツパック | $0.99 | one-time |
| 韓国っぽパック | $0.99 | one-time |
| マリンパック（夏限定） | $1.99 | one-time |
| ゲームっ子パック | $1.99 | one-time |
| アゲアゲギャルパック1 | $1.99 | one-time |
| アゲアゲギャルパック2 | $1.99 | one-time |


## Frequently asked questions

### Is Uchinoko Diary free?

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

### Is Petask デコれるTodo×シール帳 free?

Petask デコれるTodo×シール帳 is free to download, with in-app purchases available.

### Do Uchinoko Diary or Petask デコれるTodo×シール帳 have ads?

Uchinoko Diary shows ads; Petask デコれるTodo×シール帳 does not.

### Which is updated more often, Uchinoko Diary or Petask デコれるTodo×シール帳?

Uchinoko Diary ships an update every 4 days, and Petask デコれるTodo×シール帳 every 5 days. Most recently, Uchinoko Diary was updated on November 9, 2026 and Petask デコれるTodo×シール帳 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.*