# Hidden Timer vs Useful QR Code Reader

The clearest difference is update cadence: Useful QR Code Reader at weekly against Hidden Timer's every 2 weeks. 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.

Hidden Timer ships an update every 2 weeks, Useful QR Code Reader weekly. The most recent releases landed on September 2, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Hidden Timer | Useful QR Code Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 35 MB | 99 MB |
| Requires iOS | 15.8.3 | **15.6** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [katapu.net](https://appshunter.io/developer/381898924) |

## What reviewers say

### Hidden Timer

[App page](https://appshunter.io/ios/app/hidden-timer/id6502872588)

**Features:** macOS Compatibility

**In-app purchases:** none


### Useful QR Code Reader

[App page](https://appshunter.io/ios/app/useful-qr-code-reader/id6738119243)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hidden Timer free?

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

### Is Useful QR Code Reader free?

Useful QR Code Reader is free to download, with no in-app purchases.

### Do Hidden Timer or Useful QR Code Reader have ads?

Both Hidden Timer and Useful QR Code Reader show ads.

### Which is updated more often, Hidden Timer or Useful QR Code Reader?

Hidden Timer ships an update every 2 weeks, and Useful QR Code Reader weekly. Most recently, Hidden Timer was updated on September 2, 2026 and Useful QR Code Reader on September 19, 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.*