# Crystal Math vs LOGIC Duel

The clearest difference is ratings volume: Crystal Math at 3 against LOGIC Duel's 1. On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Crystal Math sells 3 one-off in-app purchases and LOGIC Duel sells 4 in-app purchases, starting at $7.99 per month. 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 Crystal Math against 5.0 for LOGIC Duel. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Crystal Math ships an update every 2 weeks, LOGIC Duel every 3 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Crystal Math | LOGIC Duel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/crystal-math-numbers-on-speed/id1261401422/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/logic-duel-math-games/id1541035881/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 80 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rafael Kolloch](https://appshunter.io/developer/985182742) | [LOGIK Duell UG (haftungsbeschraenkt)](https://appshunter.io/developer/1489843618) |

## 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 |


### LOGIC Duel

[App page](https://appshunter.io/ios/app/logic-duel-math-games/id1541035881)

Enhance your cognitive skills with daily math and logic challenges. Practice pattern recognition, memory, and focus through engaging exercises, or test your abilities in exciting online duels against other players. Train at your own pace, offline or online, to become a little smarter each day.

**Highlights:** Daily math and logic challenges, Pattern recognition exercises, Memory and focus training, Online duels against real players, Offline training mode, Daily streak tracking

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LOGIC Duel Premium 1 month | $7.99 | per month |
| LOGIC Duel Premium 2 month | $12.99 | per 2 months |
| LOGIC Duel Premium 1 year | $39.99 | per year |
| LOGIC Duel Premium Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Crystal Math free?

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

### Is LOGIC Duel free?

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

### Which has better reviews, Crystal Math or LOGIC Duel?

Crystal Math and LOGIC Duel are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do Crystal Math or LOGIC Duel have ads?

Both Crystal Math and LOGIC Duel show ads.

### Which is updated more often, Crystal Math or LOGIC Duel?

Crystal Math ships an update every 2 weeks, and LOGIC Duel every 3 weeks. Most recently, Crystal Math was updated on November 2, 2026 and LOGIC Duel on November 7, 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.*