Koe Nikki

AI Voice Diary, Fully Offline

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

A 100% offline voice diary powered by on-device AI. No internet, no account, no data leaves your phone. Just speak. "Koe Nikki" is a simple voice diary app that lets you record your daily thoughts just by speaking. Simply speak about your day, and your words are automatically converted to text. AI then summarizes your entry into a short, meaningful title. No typing required—record your diary anytime, anywhere, whether you're commuting or winding down before bed. Completely Offline & Local:No internet connection required—ever. Works perfectly on airplanes, subways, remote areas, or anywhere without network access. Speech recognition and AI title generation all happen directly on your device. Zero data is sent to external servers. Key Features: • One-tap recording—just speak to create a diary entry • Real-time speech recognition converts your voice to text instantly • AI-generated titles summarize your day (Apple Intelligence on iOS 26+) • Fully offline—works without any network connection • All data stays exclusively on your device • Clean, intuitive design • No account needed—start using it immediately Privacy First:No account required. All recordings and transcriptions are stored locally on your device and never sent to external servers. No cloud uploads. Your diary exists only on your device. Perfect for those who want to start a journaling habit, prefer speaking over typing, want to capture thoughts on the go, or prioritize privacy.

Ratings & Reviews

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Minor bug fixes. • Improved splash screen display • Fixed app language settings

Version 1.1.1

The developer, Peinan Zhang, 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, 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
    • Peinan Zhang
    Size
    • 34.3 MB
    Category
    • Lifestyle
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    Languages
    • Japanese
    Age Rating
    4+
    Copyright
    • ©︎ 2026 Peinan Zhang
  • Developer Website
  • Privacy Policy

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