Crazy Maths. vs Even or odd Mental calculation
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Crazy Maths.
This app offers a fun way to learn and practice fundamental math skills. It covers addition, subtraction, multiplication, division, and number theory concepts through engaging exercises and game modes. Designed for self-improvement, it helps build arithmetic fluency and mental math strategies.
- Basic arithmetic practice
- Number theory concepts
- Multiplication table learning
- Mental math strategies
- Multiple difficulty levels
- High scores and awards
- Fun animations
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Exploring a variety of mathematical topics. Learn basic math skills in addition, subtraction, multiplication and division. Learn the even numbers, odd numbers, prime numbers, Fibonacci numbers. Learn multiplication table. Exploring math skills. Improves arithmetic fluency and promotes development of mental strategies for addition, subtraction, multiplication, division and mixed operations. With a focus on self-improvement. FEATURES / EDUCATIONAL CONTENT: - Addition - Subtraction - Multiplication - Division - Arithmetic - Multiplication table - The even numbers, odd numbers, prime numbers, Fibonacci numbers. - Combination of the above - Practice mental addition, subtraction, multiplication, division and mixed operations - Develop arithmetic fluency and improve mental strategies - Mental math game - Choose their options by themselves - Various fun game modes - Possibility to follow the results of several players - 3 levels of difficulty - Fun animations - Access to the Game Center - High scores and awards. We are listening to, frequently enhancements game based on your feedback Please give us feedback in comments, we will make it the best game! .
Even or odd Mental calculation
Test your mental math skills by quickly determining if the result of an on-screen operation is even or odd. Earn more points for faster answers and challenge friends to see who has the quickest mind. The difficulty increases as you progress.
- Timed mental calculation challenges
- Score tracking for personal bests
- Speed-based scoring system
- Increasing difficulty levels
- Multiplayer comparison
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Solve the calculation and choose: is the answer even or odd? Par o Impar combines addition, subtraction and multiplication with short sessions and two large answer buttons. Practise at your own pace or test your speed across five modes: - Classic: answer before time runs out and try to beat your record. - Sprint 60: get as many answers right as you can in one minute. Each mistake costs three seconds. - Daily Challenge: 20 calculations each day, with one official attempt and unlimited practice afterwards. - Training: choose addition, subtraction, multiplication or a mix. Play without a timer and see an explanation after each answer. - Challenge Route: complete 30 levels involving calculations, accuracy and memory, and earn medals. A short tutorial explains the controls. Pause your game, adjust sound and vibration, and check your records. Progress is saved on this device and all game modes work offline. The game interface is in Spanish. The app contains advertising. If you previously bought ad removal on iOS, you can restore it from Settings (Ajustes).
Screenshots
Verdict
The clearest difference is in-app purchases: Crazy Maths. at none against Even or odd Mental calculation's 1. Crazy Maths. also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Even or odd Mental calculation's advantage is update cadence (every 23 months vs every 64 months). On price and device support 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. Even or odd Mental calculation sells 1 one-off in-app purchase. Crazy Maths. asks for nothing beyond the download.
Crazy Maths. ships an update every 64 months, Even or odd Mental calculation every 23 months. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.
| Parameter | Crazy Maths. | Even or odd Mental calculation |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 64 months | Every 23 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Fernando Gonzalez Frias | Iker Vazquez |
Customer experience
Crazy Maths.
Even or odd Mental calculation
In-app purchases
Crazy Maths.
No in-app purchases
Even or odd Mental calculation
- Full version upgrade$0.99
Questions
Is Crazy Maths. free?
Is Even or odd Mental calculation free?
Do Crazy Maths. or Even or odd Mental calculation have ads?
Which is updated more often, Crazy Maths. or Even or odd Mental calculation?
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