# Most Common Words vs Math Quest Rainbow

The clearest difference is update cadence: Math Quest Rainbow at daily against Most Common Words's every 6 weeks. Most Common Words's advantage is iOS requirement (16.6 vs 18.6). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Most Common Words sells 5 in-app purchases, starting at $12.99 per month and Math Quest Rainbow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Most Common Words against 5.0 for Math Quest Rainbow. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Most Common Words ships an update every 6 weeks, Math Quest Rainbow daily. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Most Common Words | Math Quest Rainbow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/most-common-words/id6467641849/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/math-quest-rainbow/id6757422569/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 104 MB | 38 MB |
| Requires iOS | **16.6** | 18.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dominik Gyecsek](https://appshunter.io/developer/1447946653) | [James Rochabrun](https://appshunter.io/developer/1725235771) |

## What reviewers say

### Most Common Words

[App page](https://appshunter.io/ios/app/most-common-words/id6467641849)

Master 31 languages with 3,000 essential words and over 100,000 example sentences. Features hands-free learning, spaced repetition, quizzes, and offline access. Sync progress across devices and personalize your studies with custom word lists.

**Highlights:** 3,000 essential vocabulary words, 100,000+ example sentences, Hands-free learning, Spaced repetition system, Interactive quizzes, Offline access, Progress sync across devices

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $12.99 | per month |
| Yearly Pro | $59.99 | per year |
| Yearly Pro | $79.99 | per year |
| Lifetime Pro | $79.99 | one-time |
| Lifetime Pro | $119.99 | one-time |


### 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 |


## Frequently asked questions

### Is Most Common Words free?

Most Common Words is free to download, with in-app purchases available.

### Is Math Quest Rainbow free?

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

### Which has better reviews, Most Common Words or Math Quest Rainbow?

Most Common Words and Math Quest Rainbow are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Most Common Words or Math Quest Rainbow have ads?

Neither Most Common Words nor Math Quest Rainbow shows ads.

### Which is updated more often, Most Common Words or Math Quest Rainbow?

Most Common Words ships an update every 6 weeks, and Math Quest Rainbow daily. Most recently, Most Common Words was updated on October 2, 2026 and Math Quest Rainbow on October 13, 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.*