# TimeHack vs 子彈筆記

The clearest difference is update cadence: 子彈筆記 at every 2 days against TimeHack's every 3 months. TimeHack's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

TimeHack ships an update every 3 months, 子彈筆記 every 2 days. The most recent releases landed on October 9, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | TimeHack | 子彈筆記 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Size | 33 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aito Takazawa](https://appshunter.io/developer/1873580593) | [Tzu-Ying Chan](https://appshunter.io/developer/6799665580) |

## What reviewers say

### TimeHack

[App page](https://appshunter.io/ios/app/timehack-time-and-study-log/id6758551908)

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

**In-app purchases:** none


### 子彈筆記

[App page](https://appshunter.io/ios/app/id6803340284)

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

**In-app purchases:** none


## Frequently asked questions

### Is TimeHack free?

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

### Is 子彈筆記 free?

子彈筆記 is free to download, with no in-app purchases.

### Do TimeHack or 子彈筆記 have ads?

Both TimeHack and 子彈筆記 show ads.

### Which is updated more often, TimeHack or 子彈筆記?

TimeHack ships an update every 3 months, and 子彈筆記 every 2 days. Most recently, TimeHack was updated on October 9, 2026 and 子彈筆記 on October 17, 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.*