Comparison

Even or odd Mental calculation vs Piyo Math

Price, ratings, monetisation and update history for both games, side by side โ€” with what reviewers say about each.

Head to head
About

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.

Highlights
  • Timed mental calculation challenges
  • Score tracking for personal bests
  • Speed-based scoring system
  • Increasing difficulty levels
  • Multiplayer comparison
Features
Read full description

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).

About

Piyo Math

Engage your brain with a math game that challenges you to form equations using given numbers and four arithmetic operations to reach a target value. With over 8,000 problems across 12 difficulty levels, it offers extended playtime for math enthusiasts and brain trainers alike.

Highlights
  • Equation creation with four operations
  • Target value challenges
  • 12 difficulty levels
  • Over 8,000 problems
  • Brain training exercises
Features
Read full description

This is a completely free app named "Piyo Math." This app is a game that uses given numbers and four arithmetic operations to create an equation equal to a target value. There are levels 1 through 12, each with a different difficulty level. In total, there are more than 8,000 problems available, so you can enjoy it for a long time. This app is recommended for those who are interested in mathematics as well as for those who want to train their brains.

Screenshots

Even or odd Mental calculation4 screens
Piyo Math4 screens

Verdict

The call

The clearest difference is in-app purchases: Piyo Math at none against Even or odd Mental calculation's 1. Piyo Math also leads on ads (none vs shown) and update cadence (every 2 months vs every 23 months). Even or odd Mental calculation's advantage is device support (3 vs 1). On price, review sentiment and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Even or odd Mental calculation sells 1 one-off in-app purchase. Piyo Math asks for nothing beyond the download.

UpkeepUpdate frequency

Even or odd Mental calculation ships an update every 23 months, Piyo Math every 2 months. The most recent releases landed on September 16, 2026 and September 12, 2026 respectively.

Scorecard5 real differences ยท 3 level
Even or odd Mental calculation versus Piyo Math: the parameters behind the verdict, then further details
ParameterEven or odd Mental calculationPiyo Math
PriceFreeFree
Positive reviews100.0% of reviews100.0% of reviews
Update frequencyEvery 23 monthsEvery 2 months โ€” better
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
MonetizationFree with in-app purchasesFree โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.0 โ€” better16.1
Further details โ€” not scored
Size68 MB4 MB
Age rating4+4+
DeveloperIker VazquezDaiki Kaneda

Customer experience

Even or odd Mental calculation

Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Piyo Math

Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Even or odd Mental calculation

One-time1
  • Full version upgrade$0.99
None

Piyo Math

No in-app purchases

Questions

Is Even or odd Mental calculation free?
Even or odd Mental calculation is free to download, with in-app purchases available.
Is Piyo Math free?
Piyo Math is free to download, with no in-app purchases.
Do Even or odd Mental calculation or Piyo Math have ads?
Even or odd Mental calculation shows ads; Piyo Math does not.
Which is updated more often, Even or odd Mental calculation or Piyo Math?
Even or odd Mental calculation ships an update every 23 months, and Piyo Math every 2 months. Most recently, Even or odd Mental calculation was updated on September 16, 2026 and Piyo Math on September 12, 2026.

Other comparisons