Comparison

Flash Mental Math vs Flash Mental Math (Anzan)

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

Head to head
About

Flash Mental Math

Practice mental arithmetic with various difficulty levels and custom modes. This app serves as a brain training tool to enhance calculation skills.

Highlights
  • Mental arithmetic practice
  • Easy, normal, and difficult modes
  • Customizable modes
  • Brain training
  • Calculation skill improvement
Features
Read full description

Flash mental arithmetic practice app In addition to the easy, normal, and difficult modes, there are also custom modes. It can also be a brain training to improve mental arithmetic

About

Flash Mental Math (Anzan)

This app helps users of all ages improve their mental math and calculation speed. Numbers flash on screen briefly, training quick thinking and concentration. It's ideal for children preparing for abacus certification, students needing math test prep, or adults seeking brain training.

Highlights
  • Flash number display for quick thinking
  • Adjustable difficulty levels
  • Global and classroom rankings
  • No account registration required
  • Supports multiple languages
  • Intuitive interface for children
Features
Read full description

A flash anzan trainer built around precise timing. The numbers keep an exact rhythm and the sound lands with them, so even at high speed you can keep your mind on the calculation. THREE THINGS ABOUT THIS APP Precise display and sound The moment each number appears is worked out from the time since the start, on every frame, so the spacing never drifts however many numbers there are. The sound plays at the same moment the number changes. From 20 Kyu to 20 Dan, step by step You start with 2 one-digit numbers and work up as the count grows and the time shrinks. Test Mode puts you through the same 40 grades as the abacus, from 20 Kyu to 20 Dan. Ten questions, seven right to pass. Compete with your class Set the same Room ID and you see a ranking of just that room. A soroban class or a family can share one Room ID and keep practising against people they know. There is a global ranking too. MAIN FEATURES Stages 1 to 6 digits, 350 steps per digit, 2,100 in all. The count of numbers and the speed change little by little. Test Mode 40 grades from 20 Kyu to 20 Dan. Ten questions a round, seven right to pass. Grades you pass are recorded. From 20 Kyu to 17 Kyu the first number appears as abacus beads. Rankings Five rankings: stages cleared, test grade, attempts, login streak and total logins. Global and room, both. No account and no sign-in. You can change your display name and Room ID in the settings. Custom Mode (monthly plan) Choose the digits, the count of numbers, the seconds and how many questions run back to back. Digits 1 to 7, numbers 2 to 30, seconds in steps of 0.1, and 1 to 30 questions. Display settings Four text colours and two fonts. Light and dark modes. Login streak Counts the days you keep coming back, and the total. You can compare those in the rankings too. WHO IT IS FOR • People learning at a soroban class who want to practise flash anzan at home • People who want grades to aim at while they practise • Teachers who want their students practising on the same terms • Adults who want to work their head FREE AND THE MONTHLY PLAN All 2,100 stages, Test Mode and the rankings are free. The monthly plan removes the ads and unlocks Custom Mode. QUESTIONS Do I need an account? No. Open it and practise. A display name is given to you and you can change it in the settings. What age is it for? Once you can add numbers. It starts at 2 one-digit numbers in 4 seconds. Can a soroban class use it? Yes. Set the same Room ID and the ranking covers just that class. Can I practise multiplication or division? No. This app is addition only. LANGUAGES Japanese, English, Chinese (Simplified), Korean, Spanish, Portuguese, French, German and Italian. It follows the language of your device. Note: the Kyu and Dan grades in Test Mode are our own yardstick inside the app. They are not connected to any examining body. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Flash Mental Math3 screens
Flash Mental Math (Anzan)4 screens

Verdict

The call

The clearest difference is in-app purchases: Flash Mental Math at none against Flash Mental Math (Anzan)'s 1. Flash Mental Math also leads on ratings volume (18 vs 3). Flash Mental Math (Anzan)'s advantage is update cadence (every 10 days vs every 3 months) and rating (5.0 vs 4.7). On price, ads, 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. Flash Mental Math (Anzan) sells 1 in-app purchase, starting at $0.99 per month. Flash Mental Math asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Flash Mental Math (Anzan) holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Flash Mental Math has 18 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Flash Mental Math ships an update every 3 months, Flash Mental Math (Anzan) every 10 days. The most recent releases landed on September 29, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 4 level
Flash Mental Math versus Flash Mental Math (Anzan): the parameters behind the verdict, then further details
ParameterFlash Mental MathFlash Mental Math (Anzan)
PriceFreeFree
Rating4.7 (18 ratings)5.0 (3 ratings) — better
Number of ratings18 — better3
Update frequencyEvery 3 monthsEvery 10 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size14 MB54 MB
Age rating4+4+
DeveloperRyouhei AzumaSIC Company Limited

Customer experience

Flash Mental Math

All ratings18 ratings
Positive94.4%
Neutral0.0%
Negative5.6%

Flash Mental Math (Anzan)

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Flash Mental Math

No in-app purchases

1 purchases

Flash Mental Math (Anzan)

Subscriptions1
  • Monthly Subscription$0.991 Month

Questions

Is Flash Mental Math free?
Flash Mental Math is free to download, with no in-app purchases.
Is Flash Mental Math (Anzan) free?
Flash Mental Math (Anzan) is free to download, with in-app purchases available.
Which has better reviews, Flash Mental Math or Flash Mental Math (Anzan)?
Flash Mental Math (Anzan) is rated higher. Flash Mental Math averages 4.7 out of 5 from 18 ratings, while Flash Mental Math (Anzan) averages 5.0 from 3 ratings.
Do Flash Mental Math or Flash Mental Math (Anzan) have ads?
Both Flash Mental Math and Flash Mental Math (Anzan) show ads.
Which is updated more often, Flash Mental Math or Flash Mental Math (Anzan)?
Flash Mental Math ships an update every 3 months, and Flash Mental Math (Anzan) every 10 days. Most recently, Flash Mental Math was updated on September 29, 2026 and Flash Mental Math (Anzan) on October 7, 2026.

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