Language Diary - AI Journal

Write badly. Learn fast. Language Diary turns imperfect diary entries into personal language lessons.

Most language apps teach you sentences about other people's lives. Language Diary works with yours: you write a few lines about your real day in the language you are learning, and AI turns exactly those lines into corrections, explanations, and review material made only for you.

Write with what you know. Do not know a word? Just write it in your own language. "I go to okul today" is a perfectly fine entry. Language Diary understands what you meant, detects the mixed-in words, and teaches you the right ones.

Get corrected, kindly. Every entry comes back as a natural corrected version plus a short explanation of each meaningful mistake, written in YOUR language. Tense slips, missing articles, word order: you see what changed and why, without judgment.

Learn words from your own life. The app extracts the vocabulary that actually matters to you: your work, your family, your hobbies, your daily routine. No random word lists.

Review with smart flashcards. Corrections and new words become spaced-repetition review cards built from your own writing. A few minutes of review a day locks in what you learned.

See your patterns. Language Diary tracks the mistakes you repeat across entries and shows your progress over time, so you always know what to work on next.

20 languages. Learn English, Spanish, French, German, Italian, Portuguese, Turkish, Russian, Japanese, Korean, Chinese, Arabic, Hindi, Dutch, Polish, Swedish, Ukrainian, Vietnamese, Thai, or Indonesian, with explanations in any of them.

Private by design. Your diary lives on your device. Entries are sent securely to our server only for the moment of analysis and are never stored there. No account, no ads, no tracking.

Free to start. Write and analyze 3 entries every week for free, with full corrections, explanations, review cards, and progress tracking. Premium unlocks up to 10 entries every day and full diary export, with a 7-day free trial on the yearly plan.

Start writing about your life today. Your mistakes become your lessons.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ofolabs.net/languagediary/privacypolicy App Terms: https://ofolabs.net/languagediary/terms