MathZombie! vs GACHI CROSS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MathZombie!
Engage in a brain-training calculation game to defeat zombies with mental arithmetic. Solve addition, subtraction, and multiplication problems to progress through increasingly difficult stages and compete on global leaderboards. Practice makes perfect for faster calculations.
- Mental arithmetic training
- Addition, subtraction, multiplication
- Progressive difficulty levels
- In-game coin collection
- Global and net rankings
- Bluetooth keyboard support
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Brain training calculation app that can beat the zombies in mental arithmetic has emerged. The words that come out to the left and right let's calculate alternately. Addition, subtraction, supports the multiplication. iPhone, iPad compatible. Collect coins, let's move to a more intense stage. In a more strong stage, it will be more difficult problem is displayed. A game, with repeated practice, you can speed up the calculation. Speed results at the time of clear, is recorded on the terminal, it will be the ranking display. Also the net rankings correspond, you can compete in the same word. 2020 was released, super recommended in mental arithmetic app. 【rule】 Or defeat 30 bodies, after a lapse of more than 60 seconds, the game will end. Even such as when you fail to mental arithmetic in the middle, Soku, you can try again. The first problem, if you enter, and the start of the game. 【I want to do in such a person】 A game, those who want to speed the improvement of mental arithmetic While enjoying the exhilaration, those who want to speed the improvement of mental arithmetic Input is too fast, those who entered was not caught up in other apps A simple mental arithmetic practice, those who had quit Is, lovers to compete a person with mental arithmetic If you want to a mental calculation that uses a Bluetooth keyboard If you want to practice mental arithmetic on a computer 【function】 Switching of enemy strength Clear result rankings Net rankings Bluetooth keyboard support 【Various calculation】 addition subtraction multiplication 【Terms of service】 https://mathzombie.nonip.net/privacy.html 【Othe】 Mental zombies, offers a Kajinet.
GACHI CROSS
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If you want to cut down your 3x3 Rubik's Cube solve times, mastering the Cross is your first step. This app is a hands-on training tool designed specifically to optimize the first and most critical stage of your solve. Learn from the Best: Unlock Pro-Level Insights Don't just solve—see exactly how top-ranking cubers do it through move-by-move replays and notation breakdowns. By tracing world-class, optimal move counts, you will develop finger tricks and lookahead techniques that are nearly impossible to discover on your own. Competition-Ready Practice Generate realistic scrambles tailored for practical 3x3 Cross practice. Perfect for beginners building solid fundamentals, as well as intermediate and advanced solvers looking to plan their entire cross during the 15-second inspection phase. Key Features Leaderboards & Replays: Study optimal solutions from top cubers step-by-step. Realistic Scrambles: Smart problem generation tailored for cross-solving. High-Precision Timer: Track your progress down to the millisecond. Solution Simulator: Compare your personal solutions against optimal paths to eliminate wasted moves. Recommended For: Cubers hitting a plateau and looking to break through time barriers. Speedcubers preparing for official WCA competitions. Solvers of all skill levels aiming to maximize their 3x3 efficiency. Anyone wanting a dedicated timer to track their cross speed. Cubers looking to master every cross variation and transition into F2L seamlessly. "Master the Cross, master the Cube." Start turning your Cross into your fastest, most decisive weapon today!
Screenshots
Verdict
The clearest difference is ads: GACHI CROSS at none against MathZombie!'s shown. GACHI CROSS also leads on update cadence (every 8 days vs every 2 months). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.
MathZombie! ships an update every 2 months, GACHI CROSS every 8 days. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.
| Parameter | MathZombie! | GACHI CROSS |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| Update frequency | Every 2 months | Every 8 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 179 MB | 69 MB |
| Age rating | 9+ | 4+ |
| Developer | M kajimura | Yuya Yoshida |
In-app purchases
MathZombie!
No in-app purchases
GACHI CROSS
No in-app purchases









