# Cat vs 集中力タイマー

The clearest difference is ads: 集中力タイマー at none against Cat's shown. Cat's advantage is update cadence (every 3 days vs every 8 days) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

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

Cat ships an update every 3 days, 集中力タイマー every 8 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Cat | 集中力タイマー |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 8 days |
| Size | 33 MB | 3 MB |
| Requires iOS | **15.1** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yuki Kuwahara](https://appshunter.io/developer/1464637125) | [Koki Komatsu](https://appshunter.io/developer/1796307607) |

## What reviewers say

### Cat

[App page](https://appshunter.io/ios/app/cat-todo/id6755334306)

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

**In-app purchases:** none


### 集中力タイマー

[App page](https://appshunter.io/ios/app/id6796582976)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cat free?

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

### Is 集中力タイマー free?

集中力タイマー is free to download, with no in-app purchases.

### Do Cat or 集中力タイマー have ads?

Cat shows ads; 集中力タイマー does not.

### Which is updated more often, Cat or 集中力タイマー?

Cat ships an update every 3 days, and 集中力タイマー every 8 days. Most recently, Cat was updated on November 9, 2026 and 集中力タイマー on November 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.*