# Crystal Math vs MindGrid

The clearest difference is ads: MindGrid at none against Crystal Math's shown. Crystal Math's advantage is update cadence (every 2 weeks vs every 9 months) and rating (5.0 vs 4.8). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Crystal Math sells 3 one-off in-app purchases and MindGrid sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Crystal Math holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Crystal Math ships an update every 2 weeks, MindGrid every 9 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Crystal Math | MindGrid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/crystal-math-numbers-on-speed/id1261401422/reviews)** | [4.8 (5 ratings)](https://appshunter.io/ios/app/mindgrid-a-logic-puzzle/id1603857097/reviews) |
| Number of ratings | 3 | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 9 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 8 MB |
| Requires iOS | **15.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rafael Kolloch](https://appshunter.io/developer/985182742) | [Lukasz Rutkowski](https://appshunter.io/developer/1561590120) |

## What reviewers say

### Crystal Math

[App page](https://appshunter.io/ios/app/crystal-math-numbers-on-speed/id1261401422)

This game offers four distinct modes to sharpen your mental arithmetic. Compete against the clock, challenge other players, or practice at your own pace to become a math champion and unlock achievements.

**Highlights:** Daily challenges with leaderboards, Player vs. player duels, 30-second time attack mode, Free exploration mode, Avatar customization, Achievement unlocking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hipster | $0.99 | one-time |
| Famous | $0.99 | one-time |
| Cinema | $0.99 | one-time |


### MindGrid

[App page](https://appshunter.io/ios/app/mindgrid-a-logic-puzzle/id1603857097)

A logic puzzle game where you deduce the correct placement of colored tiles based on row clues. It offers hundreds of levels, daily challenges, and Game Center integration for a brain-teasing experience.

**Highlights:** 360 levels across three difficulty modes, Mark tiles and exclude colors, Unlockable hints for incorrect guesses, Game Center integration (leaderboards, achievements, sync), Daily Game Mode with new levels

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Keys | $0.99 | one-time |
| 25 Keys | $1.99 | one-time |
| 50 Keys | $2.99 | one-time |
| Daily Game Mode | $4.99 | one-time |


## Frequently asked questions

### Is Crystal Math free?

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

### Is MindGrid free?

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

### Which has better reviews, Crystal Math or MindGrid?

Crystal Math is rated higher. Crystal Math averages 5.0 out of 5 from 3 ratings, while MindGrid averages 4.8 from 5 ratings.

### Do Crystal Math or MindGrid have ads?

Crystal Math shows ads; MindGrid does not.

### Which is updated more often, Crystal Math or MindGrid?

Crystal Math ships an update every 2 weeks, and MindGrid every 9 months. Most recently, Crystal Math was updated on October 24, 2026 and MindGrid on October 24, 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.*