# PCK vs Rectangle Detection

The clearest difference is ads: PCK at none against Rectangle Detection's shown. PCK also leads on iOS requirement (13.0 vs 17.7.2). Rectangle Detection's advantage is update cadence (fortnightly vs every 2 months). On price, 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.

PCK ships an update every 2 months, Rectangle Detection fortnightly. The most recent releases landed on September 29, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | PCK | Rectangle Detection |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 50 MB | 36 MB |
| Requires iOS | **13.0** | 17.7.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [IVTES LTD.](https://appshunter.io/developer/1108356434) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### PCK

[App page](https://appshunter.io/ios/app/pck/id6502973217)

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

**In-app purchases:** none


### Rectangle Detection

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PCK free?

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

### Is Rectangle Detection free?

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

### Do PCK or Rectangle Detection have ads?

Rectangle Detection shows ads; PCK does not.

### Which is updated more often, PCK or Rectangle Detection?

PCK ships an update every 2 months, and Rectangle Detection fortnightly. Most recently, PCK was updated on September 29, 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.*