# Question Diary 365 vs tatamu

The clearest difference is in-app purchases: tatamu at none against Question Diary 365's 2. tatamu also leads on update cadence (every 3 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Question Diary 365 sells 2 in-app purchases, starting at $4.99 per month. tatamu asks for nothing beyond the download.

Question Diary 365 ships an update every 3 weeks, tatamu every 3 days. The most recent releases landed on October 25, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Question Diary 365 | tatamu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 126 MB | 37 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Masami Mitsuta](https://appshunter.io/developer/1803880391) | [Yuki Sakurai](https://appshunter.io/developer/1831311965) |

## What reviewers say

### Question Diary 365

[App page](https://appshunter.io/ios/app/question-diary-365/id6777899186)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $49.99 | per year |


### tatamu

[App page](https://appshunter.io/ios/app/tatamu/id6793977558)

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

**In-app purchases:** none


## Frequently asked questions

### Is Question Diary 365 free?

Question Diary 365 is free to download, with in-app purchases available.

### Is tatamu free?

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

### Do Question Diary 365 or tatamu have ads?

Neither Question Diary 365 nor tatamu shows ads.

### Which is updated more often, Question Diary 365 or tatamu?

Question Diary 365 ships an update every 3 weeks, and tatamu every 3 days. Most recently, Question Diary 365 was updated on October 25, 2026 and tatamu on November 6, 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.*