Even or odd Mental calculation vs 100%
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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).
100%
Test and improve your memory with a daily brain challenge. Memorize graphical patterns within a second and recreate them to enhance your recall abilities. Aim to reach 100% memory capacity through consistent practice.
- Memorize graphical patterns
- Recreate patterns
- Daily brain challenge
- Improve memory capacity
- Track memory improvement
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Is your memory functioning at 100% of its capacity? Give your brain its daily dose of challenge. You have one second to memorize a graphical pattern, which you will have to recreate. Day by day, your memory will improve, and soon you will reach 100%!
Screenshots
Verdict
The clearest difference is ads: 100% at none against Even or odd Mental calculation's shown. 100% also leads on update cadence (every 5 days vs every 23 months) and iOS requirement (7.0 vs 15.0). Even or odd Mental calculation's advantage is review sentiment (100% vs 80%). On price, in-app purchases, monetization model 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 and 100% sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Even or odd Mental calculation ships an update every 23 months, 100% every 5 days. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Even or odd Mental calculation | 100% |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (39 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 79.7% of reviews |
| Number of ratings | — | 39 — better |
| Update frequency | Every 23 months | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 7.0 — better |
| Further details — not scored | ||
| Size | 68 MB | 60 MB |
| Age rating | 4+ | 4+ |
| Developer | Iker Vazquez | Umbrella Games LLC |
Customer experience
Even or odd Mental calculation
100%
Bugs and requests
Even or odd Mental calculation
Not enough reviews yet to summarise bugs or requests.
100%
Reported bugs
3 issues- Tiles not registering touches properly
- App not working when offline
- Inconsistent performance on older devices
Requested features
4 requests- Ability to choose difficulty level directly
- Customization options for design and colors
- Sharing features to challenge friends
- Colourblind mode
In-app purchases
Even or odd Mental calculation
- Full version upgrade$0.99
100%
- No Ads$0.99
Questions
Is Even or odd Mental calculation free?
Is 100% free?
Do Even or odd Mental calculation or 100% have ads?
Which is updated more often, Even or odd Mental calculation or 100%?
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