# 集中タイマー vs Done Diary

The clearest difference is in-app purchases: 集中タイマー at none against Done Diary's 2. 集中タイマー also leads on iOS requirement (15.0 vs 26.4). Done Diary's advantage is update cadence (monthly vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. Done Diary sells 2 in-app purchases, starting at $2.99 per month. 集中タイマー asks for nothing beyond the download.

集中タイマー ships an update every 9 months, Done Diary monthly. The most recent releases landed on October 6, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 集中タイマー | Done Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 months | **Monthly** |
| Size | 28 MB | 6 MB |
| Requires iOS | **15.0** | 26.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kousaka Kirino](https://appshunter.io/developer/1037180476) | [Kaito Yoshimura](https://appshunter.io/developer/1724577692) |

## What reviewers say

### 集中タイマー

[App page](https://appshunter.io/ios/app/id6446185573)

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

**In-app purchases:** none


### Done Diary

[App page](https://appshunter.io/ios/app/done-diary/id6769931191)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PremiumPlan（MonthlyPayment） | $2.99 | per month |
| PremiumPlan（YearlyPayment） | $24.99 | per year |


## Frequently asked questions

### Is 集中タイマー free?

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

### Is Done Diary free?

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

### Do 集中タイマー or Done Diary have ads?

Both 集中タイマー and Done Diary show ads.

### Which is updated more often, 集中タイマー or Done Diary?

集中タイマー ships an update every 9 months, and Done Diary monthly. Most recently, 集中タイマー was updated on October 6, 2026 and Done Diary on September 26, 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.*