# Rectangles & Primes vs CheckPrimeNumbers

The clearest difference is price: Rectangles & Primes at Free against CheckPrimeNumbers's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Rectangles & Primes is free to download; CheckPrimeNumbers costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Rectangles & Primes | CheckPrimeNumbers |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 10 MB | 0 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Johannes Charra](https://appshunter.io/developer/1557733427) | [Sreekanth Parigela](https://appshunter.io/developer/1763791561) |

## What reviewers say

### Rectangles & Primes

[App page](https://appshunter.io/ios/app/rectangles-and-primes/id1572074176)

**Features:** macOS Compatibility

**In-app purchases:** none


### CheckPrimeNumbers

[App page](https://appshunter.io/ios/app/checkprimenumbers/id6670205769)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rectangles & Primes free?

Rectangles & Primes is free to download, with no in-app purchases.

### Is CheckPrimeNumbers free?

CheckPrimeNumbers costs $0.99, with no in-app purchases.

### Do Rectangles & Primes or CheckPrimeNumbers have ads?

Neither Rectangles & Primes nor CheckPrimeNumbers shows ads.

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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.*