Neumonic

Memorize your seed phrase

Free · Designed for iPad. Not verified for macOS.

Permanently memorize your 12-word seed phrase with scientifically proven spaced repetition. Fully offline, Keychain encryption, Face ID protection. Neumonic helps you permanently memorize your 12-word BIP-39 mnemonic seed phrase using scientifically proven spaced repetition. Based on the Ebbinghaus forgetting curve, the app schedules reviews at optimal intervals — from 20 minutes to 1 month — so each word moves from short-term to long-term memory. Your seed phrase is stored exclusively in the iOS Keychain and never leaves your device. No servers, no network calls, no cloud sync. Fully offline. The app breaks the 12 words into manageable groups of 3 and guides you through 4 quiz types that progressively increase in difficulty: fill-in-the-blank, sequence ordering, position recall, and full recall typing. A session-based learning system unlocks new word groups only after previous ones are mastered, ensuring a solid foundation at every step. Push notifications remind you exactly when to review so you never miss the optimal timing. Stay motivated with gamification features including streaks, XP-based leveling, and achievement badges. A dark-themed interface keeps your eyes comfortable, while Face ID / Touch ID lock, screenshot blocking, and background blur protect your sensitive data at all times. BrainWallet supports BIP-39 wordlists in 10 languages and the app UI is localized in Korean, English, Japanese, Simplified Chinese, and Spanish.

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The developer, Hyeong-soo Kim, 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 Collected

    The developer does not collect any data from this app.

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

    Accessibility

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    Information

    Seller
    Hyeong-soo Kim
    Size
    1.6 MB
    Category
    Education
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 4 more
    • English, Japanese, Korean, Simplified Chinese, Spanish
    Age Rating
    4+
    Copyright
    © 2026 Hyeong-soo Kim
  • Developer Website
  • Privacy Policy

    • More by Hyeong-soo Kim

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