Anzan Zen: Mental Math

Soroban Flash Anzan Trainer

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Numbers flash, you say the total. Climb 20 levels from 10 kyu to 10 dan, or switch to Dictation: the phone reads the numbers aloud and you add them by ear. Anzan Zen is a calm mental math trainer built around flash anzan, the Japanese abacus drill: numbers flash one at a time, you add them in your head and say the total out loud. Climb 20 levels, the 10 kyu to 10 dan of the Japanese exam: from two 2-digit numbers up to fifteen 3-digit numbers flashed in 3 seconds. FLASH ANZAN, 20 LEVELS Numbers appear one by one and vanish. After the last one, give the sum of them all. • Levels 1 to 20, from 10 kyu (two 2-digit numbers in 4 seconds) up to 10 dan (fifteen 3-digit numbers in 3 seconds) • Custom: 3, 5, 10 or 15 numbers, 1 to 3 digits, 1.5, 1.0, 0.7 or 0.4 seconds per number The levels follow the Japanese flash anzan exam table. They are not an official certification. One wrong total ends the run. Every level and setting keeps its own record: how many totals in a row you got right. DICTATION Nothing on screen. The phone reads the numbers aloud, one by one, the way an abacus teacher calls them out in class. Listen, add them up in your head and say the total when it stops. Choose how many numbers, how many digits and the pace: slow, normal or fast. Levels 1 to 6 run from 6 kyu (seven 1-digit numbers) to 1 kyu (ten numbers of 2 to 4 digits, lengths mixed within a round), following the Japanese dictation exam table. They are not an official certification. CHAIN, ON SCREEN OR READ ALOUD A running total that never sits still. Start with 7 + 5, then × 12, − 9, ÷ 4. The total is never shown: hold it in your head and answer each step within 10 seconds. Play it on screen, or pick Audio: the phone reads each step aloud and the screen stays blank. ANSWER BY VOICE Just say the number. No tapping, no hunting for keys, so your eyes and attention stay on the numbers. Speech recognition is provided by Apple; Anzan Zen does not record or store your audio. Somewhere quiet? The keypad is always there. WHO IT IS FOR • Soroban and abacus students who want flash anzan and dictation practice at home • Anyone working toward the next grade and a faster mental count • Kids building mental arithmetic and addition speed • Adults who want a few focused minutes a day to keep the brain sharp • Former abacus learners getting their old speed back CALM BY DESIGN No noise, no clutter, nothing competing with the numbers. Available in English, Japanese, Korean, Chinese (Simplified and Traditional) and Russian. FREE AND PRO Free: both chains, Flash levels 1 to 5, Dictation level 1, and voice answers in every game. Pro, one purchase with no subscription: Flash levels 6 to 20 with your own settings, and Dictation levels 2 to 6. Made by the studio behind Math Zen.

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Anzan Pro can now be shared with your family through Family Sharing. New optional Usage diagnostics: if you turn it on, Anzan Zen sends anonymous usage and crash information that helps us improve the games. It stays off unless you choose it, and you can change it any time on the start screen.

Version 1.1.1

The developer, Ivan Terekhin, 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:

    • Purchases
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Ivan Terekhin
Size
55.5 MB
Category
Education
Compatibility
Requires iOS 16.4 or later.
  • iPhone
    Requires iOS 16.4 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 5 more
  • English, Japanese, Korean, Russian, Simplified Chinese, Traditional Chinese
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Trifoil Trailblazer
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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