# Math Quest Rainbow vs OffBook Kit

The clearest difference is update cadence: Math Quest Rainbow at daily against OffBook Kit's every 6 weeks. OffBook Kit's advantage is iOS requirement (16.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Math Quest Rainbow sells 1 one-off in-app purchase and OffBook Kit sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

Math Quest Rainbow ships an update daily, OffBook Kit every 6 weeks. The most recent releases landed on October 13, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Math Quest Rainbow | OffBook Kit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/math-quest-rainbow/id6757422569/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 82 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [James Rochabrun](https://appshunter.io/developer/1725235771) | [Jungwoo Chae](https://appshunter.io/developer/1896510671) |

## What reviewers say

### Math Quest Rainbow

[App page](https://appshunter.io/ios/app/math-quest-rainbow/id6757422569)

This app transforms arithmetic practice into a fun, offline adventure for children. Players solve math problems to earn coins, unlock collectible characters, and progress through engaging challenges.

**Highlights:** 100% Offline play, Collect Rainbow Heroes, Earn coins by solving problems, Fun animations and sound effects, Kid-friendly design, Adaptive math challenges

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Math Fun | $3.99 | one-time |


### OffBook Kit

[App page](https://appshunter.io/ios/app/offbook-kit/id6770186914)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $7.99 | per month |
| Yearly Subscription | $59.99 | per year |


## Frequently asked questions

### Is Math Quest Rainbow free?

Math Quest Rainbow is free to download, with in-app purchases available.

### Is OffBook Kit free?

OffBook Kit is free to download, with in-app purchases available.

### Do Math Quest Rainbow or OffBook Kit have ads?

Neither Math Quest Rainbow nor OffBook Kit shows ads.

### Which is updated more often, Math Quest Rainbow or OffBook Kit?

Math Quest Rainbow ships an update daily, and OffBook Kit every 6 weeks. Most recently, Math Quest Rainbow was updated on October 13, 2026 and OffBook Kit on September 28, 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.*