Crystal Math vs LOGIC Duel
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Crystal Math
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.
- Daily challenges with leaderboards
- Player vs. player duels
- 30-second time attack mode
- Free exploration mode
- Avatar customization
- Achievement unlocking
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Crystal Math brings brain training to a whole new level. No matter if against the clock, or against other math cracks, improve your mental arithmetic on a daily basis, unlock all achievements one by one and become the new math champion. Test you math skills in four challenging modes. Daily Challenge: Solve a new challenge every day and fight for a spot on the highscore list in three difficulties. Step up your game though, you only get one try! Duel: Challenge other players to a duel, or accept someone's challenge and fight for the winnig time. Time Attack: Practice under competition conditions. You have 30 seconds to solve the challenge. Free Game: Explore the game free of pressure and find your personal techniques for upcoming challenges. Choose an avatar and show math cracks around the globe what you are capable of. What are you waiting for? Pick up your slide rule and get started!
LOGIC Duel
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.
- Daily math and logic challenges
- Pattern recognition exercises
- Memory and focus training
- Online duels against real players
- Offline training mode
- Daily streak tracking
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Become a little smarter every day – online or completely offline. LOGIC Duel is your personal brain training app with quick math and logic challenges, thinking games, pattern recognition, memory exercises and tasks that strengthen your focus. And if you want, you can compete in exciting duels against real players. You choose how you train each day – in duels or alone, offline and at your own pace. LOGIC Duel improves your most important mental abilities: faster logical thinking, more confident mental math, better concentration, quick decisions and reactions, clearer pattern recognition, stronger attention and improved memory. All in short, everyday-friendly sessions that fit easily into your routine. Offline training: practice mental math, recognize patterns, solve number sequences, work on equations, strengthen your memory, play thinking games, build and maintain your daily streak, and enjoy exercises for both kids and adults. Online play: math and logic duels against real players, round-based gameplay, country filter (your country or worldwide), ranking and points, chat and reactions, fair opponents thanks to automatic skill placement. Why LOGIC Duel? Because it combines learning, challenge and fun in a natural way. No long tasks, no dry exercises – just motivating sessions that fit perfectly into your day. Ideal for students, adults, parents, children and anyone who wants to get a little smarter every single day. Start your daily streak – offline or in duels. Download LOGIC Duel now and unlock your full mental potential. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Crystal Math | LOGIC Duel |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 28 MB | 80 MB |
| Age rating | 4+ | 4+ |
| Developer | Rafael Kolloch | LOGIK Duell UG (haftungsbeschraenkt) |
Customer experience
Crystal Math
LOGIC Duel
In-app purchases
Crystal Math
- Hipster$0.99
- Famous$0.99
- Cinema$0.99
LOGIC Duel
- LOGIC Duel Premium 1 month7 Days trial$7.991 Month
- LOGIC Duel Premium 2 month7 Days trial$12.992 Months
- LOGIC Duel Premium 1 year7 Days trial$39.991 Year
- LOGIC Duel Premium Lifetime$79.99









