Comparison

WHERE'S NUMBER! vs Arithmetic Train your Brain

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

Head to head
About

WHERE'S NUMBER!

Features
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NEXT You can clear the game by tapping the number displayed in "NEXT" and erasing everything. It is a game that challenges how fast you can clear. LIMIT If you clear it within the time limit, you will advance to the next stage. GAME MODE NORMAL: The numbers are arranged in ascending order, so it is easy to find the numbers. HARD:The numbers are arranged randomly, so it is difficult to find the numbers. If you clear "NORMAL", you will be able to press the "HARD" button.

About

Arithmetic Train your Brain

Engage in daily brain training with arithmetic puzzles. Compete against your past performance to improve your calculation skills and stimulate your mind. Enjoy a progressive difficulty system and track your progress with a calendar feature.

Highlights
  • Daily brain training
  • Compete with past self
  • Progressive difficulty levels
  • Four arithmetic operations
  • Calendar progress tracking
  • Unlimited play
Features
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In addition, "Arithmetic Train your Brain" allows you to compete with your past self! Because it is your past self, not anyone else's, you can compete with your past self, which is good for your brain and stimulates your brain. By beating your past self, you can enjoy the feeling of surpassing yourself! 〇Let's give your brain a good stimulus! Let's stimulate your brain by solving calculations on the theme of "Keisan" that everyone can understand! In easy level, you will feel good to find and solve the puzzles one after another. At higher difficulty levels, you can enjoy the sensation of sweating your brain as you solve challenging calculations with step-by-step instructions. You will also be able to exercise your imagination and stimulate your brain! 〇Let's go beyond your past self! In addition, you can compete with your past self in "Everyday Keisan"! Because it is your past self, not anyone else's, you can compete with your past self, which is good for your brain and creates a good stimulus. By beating your past self, you can enjoy the feeling of surpassing yourself! 〇Keep going every day! Calendar function is included! The days when you play and clear the game are recorded. You can expect to activate your brain by continuing the good brain stimulation every day. Enjoy the fun of accumulating daily efforts by collecting stars on the calendar! The greatest effort is to keep going! Keep going every day and your brain will be rejuvenated! 〇No dropouts! You have lives to experience growth, but you can play even if your life reaches 0! You can play to the end without dropping out. Anyone can play to the end of the game, so you will always be able to step up without anyone dropping out. If you are making a lot of mistakes, take your time to think and solve the calculations at your own pace! And enjoy your calculation skills as they improve little by little, even if it's slowly. It's okay to take it slow, there is plenty of room for growth! Everyone can enjoy growth at their own pace! 〇Find the right amount of stimulation! Tally, subtract, multiply, divide, and divide by four arithmetic operations with multiple difficulty levels. Start with the level that suits you best and give your brain a good stimulus! Once you progress to the next level, you can enjoy brain training with higher difficulty levels as your daily routine! 〇Recommended for People who want to practice addition, subtraction, multiplication, and division. People who want to practice addition, subtraction, multiplication, and division People who want to train their brains quickly. People who have difficulty with other calculation apps.

Screenshots

WHERE'S NUMBER!3 screens
Arithmetic Train your Brain4 screens

Verdict

The call

The clearest difference is ads: WHERE'S NUMBER! at none against Arithmetic Train your Brain's shown. Arithmetic Train your Brain's advantage is update cadence (daily vs every 25 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

WHERE'S NUMBER! ships an update every 25 months, Arithmetic Train your Brain daily. The most recent releases landed on October 13, 2026 and September 23, 2026 respectively.

Scorecard2 real differences · 8 level
WHERE'S NUMBER! versus Arithmetic Train your Brain: the parameters behind the verdict, then further details
ParameterWHERE'S NUMBER!Arithmetic Train your Brain
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 25 monthsDaily — better
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size40 MB64 MB
Age rating4+17+
Developermieko kamiyaminoru yamazaki

In-app purchases

None

WHERE'S NUMBER!

No in-app purchases

None

Arithmetic Train your Brain

No in-app purchases

Questions

Is WHERE'S NUMBER! free?
WHERE'S NUMBER! is free to download, with no in-app purchases.
Is Arithmetic Train your Brain free?
Arithmetic Train your Brain is free to download, with no in-app purchases.
Do WHERE'S NUMBER! or Arithmetic Train your Brain have ads?
Arithmetic Train your Brain shows ads; WHERE'S NUMBER! does not.
Which is updated more often, WHERE'S NUMBER! or Arithmetic Train your Brain?
WHERE'S NUMBER! ships an update every 25 months, and Arithmetic Train your Brain daily. Most recently, WHERE'S NUMBER! was updated on October 13, 2026 and Arithmetic Train your Brain on September 23, 2026.

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