Pi Recall 100

Digits Memory Speed Challenge

Only for iPhone

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

iPhone

How fast can you enter the digits of pi? Start with 10 digits, build your memory step by step, and race toward a new personal best. Pi Recall 100 makes memorizing 100 decimal digits of pi a focused, fast-paced challenge. Start with the 10-digit course. Clear each course to move on to the next group of digits, then use the on-screen number pad to race toward all 100 digits. FEATURES • Courses from 10 to 100 digits in 10-digit steps • A focused 3–2–1 countdown • Times measured to one hundredth of a second • Mistake counting • Top three records stored on your device for each course • A readable 100-digit reference grouped by 10 digits • Sound and haptic controls • Japanese and English, Dark Mode, and VoiceOver support The 10- and 20-digit courses are free. A one-time Premium purchase provides access to the 30–100 digit courses. You must also clear each preceding course before moving on. Records are stored locally on your device. No account, ads, online leaderboard, or cloud sync is required.

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The developer, MITSURU ADACHI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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Information

Seller
MITSURU ADACHI
Size
54.1 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 Japanese
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Mitsuru Adachi
  • Privacy Policy

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