Daily writing
Write one line a day, saved automatically. Set your own limit, from 140 to 1,000 characters — up to 2,000 with premium.
A private diary
The simplest way to keep a diary. Write a single line about your day — on your phone, and gloriously free of AI.
Walked by the river after dinner. The light was the kind you don't forget.
On this day
Line a Day quietly shows you what you wrote on this date in years past — a small window back into your own life.
What's inside
Write one line a day, saved automatically. Set your own limit, from 140 to 1,000 characters — up to 2,000 with premium.
Everything stays on your phone. No accounts, no cloud, no AI. Lock it with Face ID, Touch ID, or a PIN.
Read back through your days as a timeline or a monthly calendar — and see what you wrote on this day in previous years.
Keep your writing streak, spot weekly patterns, and celebrate milestones. Premium unlocks full history and insights.
Export beautiful PDF books of your entries — a week, a month, or a whole year — in three design styles.
Free for everyone. Back up every entry to a CSV file, or bring your entries in from another app.
Written by you, only you
“What you write is what you see. No AI, no prompts — just you.”
Line a Day will never generate your words or send them anywhere. It's a diary for building your own writing habit — in your own hand.
See it in action
Private by design
Your entries are stored on your device. There's no cloud sync and no account to create.
Protect the app with Face ID, Touch ID, or a PIN, so your words stay yours.
No generative AI, no analytics, no ads. Nothing leaves your phone unless you choose to export it.