Solo Diary

Solo Diary replaces the habit of opening social media with a timeline that's only yours.

[No one can see it]
No followers, no public posts, no like counts. What you write here is yours alone. Instead of comparing yourself to others, you face only your past self.

[Instead of likes, a word from an AI]
When you post, an AI leaves a short comment. Choose from three personalities:
- Empathetic: picks up your feelings and gently affirms them
- Witty: light, warm teasing
- Matter-of-fact: plain facts, and changes from past entries
AI comments are optional. Every feature works with them off. When on, only your note's text is sent to generate a comment (photos are never sent).

[Your past self, returning]
"A month ago / a year ago today" surfaces at the top of your timeline, so you can gently reread how you felt back then.

[Quiet by design]
A dark theme. No red notification badges, and no endless scroll — a finite timeline you can finish.

[A note on safety]
If a note suggests you're going through something hard, the app replies with a caring message instead of a quip.

[In your language]
Available in English, Japanese, Chinese, Korean, and Spanish. The app follows your device language, and the AI replies in your language too.

No account needed. Your data stays on your device and can be deleted anytime from settings.

Free to use (ads support the AI feature). A one-time "Remove ads" purchase hides all ads.