Comparison

フラッシュ暗算検定模試(協会) 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

フラッシュ暗算検定模試(協会)

Features
Read full description

日本フラッシュ暗算協会公認の検定模試アプリです。 是非多くの方に、本物のフラッシュ暗算検定を受験していただきたいと思います。 まずは検定模試アプリで腕試し! 日本フラッシュ暗算協会の検定試験に完全準拠していますので本アプリで合格するまで十分練習すれば実際の検定試験での合格率も大幅にアップ! 実際の検定試験に沿った効率的な練習を行えます。

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
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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

フラッシュ暗算検定模試(協会)4 screens
Flash Mental Math (Anzan)4 screens

Verdict

The call

The clearest difference is price: Flash Mental Math (Anzan) at Free against フラッシュ暗算検定模試(協会)'s $3.99. Flash Mental Math (Anzan) also leads on rating (5.0 vs 3.0) and update cadence (every 10 days vs every 28 months). フラッシュ暗算検定模試(協会)'s advantage is in-app purchases (none vs 1) and ads (none vs shown). On ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

Flash Mental Math (Anzan) is free to download; フラッシュ暗算検定模試(協会) costs $3.99 up front. Flash Mental Math (Anzan) sells 1 in-app purchase, starting at $0.99 per month. フラッシュ暗算検定模試(協会) 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 3.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

UpkeepUpdate frequency

フラッシュ暗算検定模試(協会) ships an update every 28 months, Flash Mental Math (Anzan) every 10 days. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
フラッシュ暗算検定模試(協会) versus Flash Mental Math (Anzan): the parameters behind the verdict, then further details
Parameterフラッシュ暗算検定模試(協会)Flash Mental Math (Anzan)
Price$3.99Free — better
Rating3.0 (2 ratings)5.0 (3 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings23 — better
Update frequencyEvery 28 monthsEvery 10 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS8.0 — better15.0
Further details — not scored
Size15 MB54 MB
Age rating+44+
DeveloperYuji MiyamotoSIC Company Limited

Customer experience

フラッシュ暗算検定模試(協会)

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Flash Mental Math (Anzan)

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

In-app purchases

None

フラッシュ暗算検定模試(協会)

No in-app purchases

1 purchases

Flash Mental Math (Anzan)

Subscriptions1
  • Monthly Subscription$0.991 Month

Questions

Is フラッシュ暗算検定模試(協会) free?
フラッシュ暗算検定模試(協会) costs $3.99, 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, フラッシュ暗算検定模試(協会) or Flash Mental Math (Anzan)?
Flash Mental Math (Anzan) is rated higher. フラッシュ暗算検定模試(協会) averages 3.0 out of 5 from 2 ratings, while Flash Mental Math (Anzan) averages 5.0 from 3 ratings.
Do フラッシュ暗算検定模試(協会) or Flash Mental Math (Anzan) have ads?
Flash Mental Math (Anzan) shows ads; フラッシュ暗算検定模試(協会) does not.
Which is updated more often, フラッシュ暗算検定模試(協会) or Flash Mental Math (Anzan)?
フラッシュ暗算検定模試(協会) ships an update every 28 months, and Flash Mental Math (Anzan) every 10 days. Most recently, フラッシュ暗算検定模試(協会) was updated on October 26, 2026 and Flash Mental Math (Anzan) on October 7, 2026.

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