NICHIJO - One Line a Day

Journal daily in any language

Only for iPhone

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

iPhone

One sentence a day, in the language you're learning. A thoughtful AI gently corrects, translates, and helps you build vocabulary from your own writing. One line a day, in the language you're learning. NICHIJO is a daily journaling app for language learners. Write one sentence about your day — in Japanese, English, Spanish, French, Korean, or Chinese — and a thoughtful AI will gently correct your grammar, suggest more natural phrasing, translate, and surface useful vocabulary for you to remember. It's small on purpose. The hardest part of learning a language isn't grammar — it's showing up. NICHIJO is built around the idea that one honest sentence a day, written in the language you actually want to live in, beats an hour of drilling once a week. What you get - AI feedback on every entry — corrections, natural rewrites, and translations - Vocabulary cards saved automatically from your own writing - Spaced repetition review and quick quizzes to make new words stick - Six languages: Japanese, English, Spanish, French, Korean, Chinese - A calm, distraction-free writing space — no streaks, no shame, no noise Free, with subscriptions The free tier is fully usable and supported by occasional ads. Premium and Pro subscriptions unlock unlimited AI feedback, advanced vocabulary tools, and an ad-free experience. Why NICHIJO NICHIJO (日常) means "daily life" in Japanese. We believe a language isn't something you study — it's something you live in, one ordinary sentence at a time. Write your everyday. In any language. Privacy policy: https://nichijo-site.vercel.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://nichijo-site.vercel.app/support

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The developer, Hironori Murakami, 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 Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Contact Info
    • User Content
    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • 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
Hironori Murakami
Size
145 MB
Category
Education
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.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
  • 4+
  • Learn More
  • Contains
    Advertising
    User-Generated Content
In-App Purchases
Yes
Copyright
© 2026 Hironori Murakami
  • Privacy Policy

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