DiaryTutor

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.