# Digital Simple Clock vs Rectangle Detection

The clearest difference is in-app purchases: Rectangle Detection at none against Digital Simple Clock's 1. Digital Simple Clock's advantage is update cadence (every 3 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Digital Simple Clock sells 1 one-off in-app purchase. Rectangle Detection asks for nothing beyond the download.

Digital Simple Clock ships an update every 3 days, Rectangle Detection fortnightly. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Digital Simple Clock | Rectangle Detection |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Fortnightly |
| Size | 226 MB | 36 MB |
| Requires iOS | **16.0** | 17.7.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Takahiro Hama](https://appshunter.io/developer/1534557976) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Digital Simple Clock

[App page](https://appshunter.io/ios/app/digital-simple-clock/id1534560717)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| アプリ内課金 | $1.99 | one-time |


### Rectangle Detection

[App page](https://appshunter.io/ios/app/rectangle-detection/id6511216798)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Digital Simple Clock free?

Digital Simple Clock is free to download, with in-app purchases available.

### Is Rectangle Detection free?

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

### Do Digital Simple Clock or Rectangle Detection have ads?

Both Digital Simple Clock and Rectangle Detection show ads.

### Which is updated more often, Digital Simple Clock or Rectangle Detection?

Digital Simple Clock ships an update every 3 days, and Rectangle Detection fortnightly. Most recently, Digital Simple Clock was updated on October 3, 2026 and Rectangle Detection on September 27, 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.*