# MathBook+ vs Rectangles & Primes

The clearest difference is ads: Rectangles & Primes at none against MathBook+'s shown. On price, update cadence, 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.

MathBook+ ships an update monthly, Rectangles & Primes every 3 weeks. The most recent releases landed on June 22, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | MathBook+ | Rectangles & Primes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/mathbook-plus/id1547221989/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 31 MB | 10 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Education House AS](https://appshunter.io/developer/1533229296) | [Johannes Charra](https://appshunter.io/developer/1557733427) |

## What reviewers say

### MathBook+

[App page](https://appshunter.io/ios/app/mathbook-plus/id1547221989)

This digital math textbook offers over 1,000 exercises for self-paced learning on Apple devices. It provides a comprehensive resource for mastering mathematical concepts.

**Highlights:** Digital math textbook, Over 1,000 exercises, Self-paced learning, Supports iPhone, iPad, iPod, Free to download

**Features:** macOS Compatibility

**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 MathBook+ free?

MathBook+ 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 MathBook+ or Rectangles & Primes have ads?

MathBook+ shows ads; Rectangles & Primes does not.

### Which is updated more often, MathBook+ or Rectangles & Primes?

MathBook+ ships an update monthly, and Rectangles & Primes every 3 weeks. Most recently, MathBook+ was updated on June 22, 2026 and Rectangles & Primes on September 15, 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.*