A Line a Day

A DIARY, ONE SENTENCE LONG

Write one line
a day.

Not another notes app. Open it and the cursor is already waiting: write one sentence, close it. What you get back is a card you'd actually put in a chat.

  • No account
  • No permissions
  • Works offline
  • No ads

Coming soon to the App Store and Google Play.

Three decisions

Most diary apps ask you to become a person who keeps a diary. This one only asks for one sentence.

One line is the whole point

No notebooks, no folders, no tags. Open the app and the cursor is already there — the cost of writing today is one sentence.

On this day

From the second year, the app quietly shows what you wrote on this day before — under today's card, and only when there is something to show.

Nobody can read it

No account, no server, no networking code at all. Your cards sit in the app's private storage, and you can export them to a file whenever you like.

Every entry becomes a card

4:5, made for a chat or a feed: the date, your sentence, your streak. Seven backgrounds, and the card follows the one you picked.

The policy is three minutes long

  • No analytics, no advertising SDK, no crash reporting.
  • The app asks for no permissions — none on Android, none on iOS.
  • Nothing is uploaded, so there is nothing for us to sell or leak.
  • Backups go wherever you save them; deleting the app deletes your cards.
Read the privacy policy →

A few questions

The four we get asked most, answered without a sales pitch.

Where are my entries stored?

In the app's private storage on your own phone. We keep no copy, which is why we can't read them — and also why uninstalling the app removes them. If you want a safety net, export them to a file.

Does it need internet?

No. There is no networking code in the app at all. It works in airplane mode, forever, and it will keep working if we disappear.

How much does it cost?

It's a paid download, bought once. No subscription, no ads, and nothing else to buy inside the app.

What happens when I change phones?

Export your cards to one file, move it however you like, import it on the new phone. Nothing you wrote gets left behind.