DiaryTutor
Learn languages by diaries
Only for iPhone
Free
iPhone
DiaryTutor Early Access is here. Write diaries, get AI feedback, exchange letters with Buddies — learn 8 languages naturally. Thank you for being our first learners.
DiaryTutor turns daily journaling into a natural way to learn a foreign language.
Pick a language. Write a diary entry — about your morning coffee, a conversation, a feeling, anything. Your AI tutor reads it, gently corrects mistakes, suggests more natural phrasing, and explains why. The more you write, the more your tutor learns about your style.
— FOUR AI TEACHERS, EACH WITH A PERSONALITY —
• Yaya — warm, patient, perfect for beginners
• Oliver — precise and encouraging, your structured guide
• Inky — playful and creative, for expressive writers
• Milo — moody but insightful, when you want a sharper edge
Switch teachers anytime. Each one grows alongside you, leveling up from Lv 1 to Lv 15 as you write together — unlocking new expressions, new conversations, and four evolution stages.
— EIGHT LANGUAGES TO CHOOSE FROM —
English, Japanese, Korean, French, Spanish, German, Dutch, Chinese.
Mix and match. Switch languages whenever you want.
— BUDDIES: A LETTER-BASED PEN-PAL WORLD —
Pair up with a Buddy who's also learning. Exchange letters at your own pace — no pressure, no notifications buzzing every minute. Real practice with real humans, gently moderated.
— DEEP CORRECTIONS, NOT JUST GRAMMAR —
Beyond fixing mistakes, your tutor highlights:
• Code-switching habits (when you accidentally fall back to your native language)
• Naturalness scores
• Writing advice tailored to your level
— PROGRESS YOU CAN SEE —
Earn XP, unlock badges (Gold / Platinum / Cosmic), watch your character evolve, and look back on a growing diary archive in your target language.
— EARLY ACCESS NOTE —
You're using one of the first builds. We're shipping updates fast and listening closely. Tap "Send Feedback" to talk to us directly — every message is read.
Privacy & safety: All diaries are private by default. UGC is moderated by AI and human review. Report and block tools are built in.
Start writing today. The best way to learn a language is to live in it — one diary at a time.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fixed the day change issue:
In the past, after writing the last diary entry of the day late at night in the local area, "Today's diary has been completed" may still be displayed early the next morning, and no new diary can be added, and it will not be restored until close to noon. The daily progress will now change according to your time zone, exactly at 3:00am local time.
Continuous writing record reminder is online:
If you haven’t written a diary today, you will receive a reminder in the evening so that you can keep your continuous record by writing a diary or taking a quick test; corresponding test proposals will also appear when you open the app. Reminders will respect your do not disturb period and notification settings.
The developer, YEN-HSUN LI, 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:
- 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
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- YEN-HSUN LI
- Size
- 68 MB
- Category
- Education
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
Messaging and Chat
User-Generated Content
- Copyright
- © 2026 Yen-Hsun Li