Even or odd Mental calculation vs 1
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).
1
A rapid number-tapping game where players race against the clock to find numbers 1 through 100. The objective is to locate each number in sequence before they disappear.
- Fast-paced gameplay
- Number tapping challenge
- Beat the clock mode
- Sequential number finding
- Improves reaction time
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How fast can you find 1 to 100? Tap the numbers in order, as quickly as you can — but they don't sit still. The numbers drift across the screen and bounce off each other, so the one you need is never quite where you left it. Simple to learn. Genuinely hard to master. RACE THE CLOCK Every run is timed to the tenth of a second. Your best time for each level is saved, so there's always a number to beat. FOUR LEVELS TO START Work up from 1–25 to the full 1–100. Each level unlocks when you beat the one before it. GAME CENTER LEADERBOARDS See how your fastest times compare against players everywhere — or just against your friends. THREE STRIKES Tap the wrong number and it flashes red. Three mistakes ends the run. Speed is nothing without accuracy. BONUS LEVELS One optional purchase unlocks four more levels going well past 100 — all the way to 1,000 — and removes every ad at the same time. Perfect for a two-minute break, or for finding out how sharp your focus really is.
Screenshots
Verdict
The clearest difference is update cadence: 1 at weekly against Even or odd Mental calculation's every 23 months. Even or odd Mental calculation's advantage is iOS requirement (15.0 vs 18.5). On price, review sentiment, ads and in-app purchases 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 1 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, 1 weekly. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | Even or odd Mental calculation | 1 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 23 months | Weekly — better |
| 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, iPad |
| Requires iOS | 15.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 68 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Iker Vazquez | RYAN KEITH HERSHBERGER |
Customer experience
Even or odd Mental calculation
1
In-app purchases
Even or odd Mental calculation
- Full version upgrade$0.99
1
- Bonus Levels$0.99
Questions
Is Even or odd Mental calculation free?
Is 1 free?
Do Even or odd Mental calculation or 1 have ads?
Which is updated more often, Even or odd Mental calculation or 1?
Other comparisons
