One Line Journal - Daily Diary

One line a day. That's the whole app.

Most journaling apps want you to write essays. You skip a day, then a week, then you quit. One Line Journal asks for a single sentence — small enough that you actually keep going. Use it as a daily diary, a gratitude line, a memory keeper, or a simple reflection on your day.

Why one line works
A line takes ten seconds before bed. Ten seconds is easy to repeat tomorrow, and the day after. In a year you'll have 365 lines: the story of your life, written by you, one day at a time.

On This Day — your five-year diary
Every day, the journal shows you what you wrote on this exact date one, two, five years ago. It's the classic five-year diary, reborn: the ten-second entry you write tonight becomes a memory — a small gift to your future self.

Features
- Write one line per day (up to 280 characters)
- "On This Day": see past years' entries every morning
- Timeline of your whole journal, organized by month
- Edit any past day
- Export your full journal as text anytime
- Dark mode

Private by design
- No account. No sign-up. No cloud.
- Your journal never leaves your phone.
- Works completely offline.
- Uninstalling deletes everything — your words are yours.

Lightweight and honest
No subscription. No paywall. No locked features. Just a journal that respects the ten seconds you give it.

Start tonight: open the app, write one line about today, done. See you tomorrow.