MAJOR UPDATE
Now on Mac, in Nine Languages
FlashAnzan comes to the Mac, and the app now speaks nine languages. One purchase covers all your devices.
FlashAnzan: Mental Math
Kyu to Dan graded mental math
Free · In‑App Purchases
Climb 30 ranks from Kyu 10 to Dan 20 in the exam format. Answer by voice. Now on Mac, in nine languages.
Practice flash anzan (flash mental arithmetic) in the same format as the Japanese grading exam—and climb the ranks.
GRADED MODE (30 RANKS, KYU 10 TO DAN 20)
Each rank uses the exam's total-time format: numbers flash within a fixed total time, you answer 10 problems, and 70 points is a pass. Kyu 10–8 are free, and every higher rank includes one free try. A single one-time purchase unlocks all ranks (no subscription).
YOUR GRADE IS KEPT
Your best rank is recorded on the device and in iCloud, so it follows you to a new device.
ANSWER BY VOICE
Type on the number pad, or just say the answer. Speech recognition runs entirely on your device—your voice is never sent anywhere.
FREE PRACTICE
Set digits, count, and display time yourself—from slow single digits to 3-digit numbers at 0.3 seconds.
IPHONE, IPAD AND MAC
One purchase covers all three, and your grade follows you between them through iCloud.
No ads. Available in nine languages: English, Japanese, Chinese (Simplified and Traditional), Korean, German, Spanish, French and Brazilian Portuguese.
Note: This app is not affiliated with or endorsed by any certification body.
Events
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Family Sharing is here. Once you unlock every grade, up to five other family members in your Family Sharing group can use it too, at no extra cost.
The developer, Haruhiko Kishi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Haruhiko Kishi
- Size
- 8.2 MB
- Category
- Education
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later. - Apple Vision
Requires visionOS 2.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
English and 8 more
- English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Unlock All Grades $3.99
- Copyright
- © 2026 Haruhiko Kishi / MusicFlow Tokyo
