# Addition Quest vs Rectangles & Primes

The clearest difference is update cadence: Rectangles & Primes at every 3 weeks against Addition Quest's every 38 months. Addition Quest's advantage is iOS requirement (12.0 vs 15.0). 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.

Addition Quest ships an update every 38 months, Rectangles & Primes every 3 weeks. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Addition Quest | Rectangles & Primes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 3 weeks** |
| Size | 34 MB | 10 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad, Mac, Apple TV | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Johannes Charra](https://appshunter.io/developer/1557733427) |

## What reviewers say

### Addition Quest

[App page](https://appshunter.io/ios/app/addition-quest/id1462798226)

**Features:** Vision Pro support

**In-app purchases:** none


### Rectangles & Primes

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Addition Quest free?

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

### Is Rectangles & Primes free?

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

### Do Addition Quest or Rectangles & Primes have ads?

Neither Addition Quest nor Rectangles & Primes shows ads.

### Which is updated more often, Addition Quest or Rectangles & Primes?

Addition Quest ships an update every 38 months, and Rectangles & Primes every 3 weeks. Most recently, Addition Quest was updated on October 5, 2026 and Rectangles & Primes on October 2, 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.*