One sentence. One day. One life.
The world's smallest journal. Write one sentence about your day — then forget it. In exactly 365 days, we email it back as a letter from your past self.
Had coffee with Mia for the first time in two years — it felt like no time had passed at all.
An example entry — yours will be sealed just like this
Three steps. Ten seconds a day.
280 characters. One thought about your day. Takes ten seconds — and that's the whole point.
After 5 minutes, your entry seals. No editing, no re-reading. It's gone — until the right moment.
Exactly 365 days later, we email you what you wrote. A letter from the person you were.
Every entry you write today becomes a Time Capsule. Exactly one year later, we email it to you — no warning, just a quiet reminder of the person you were on that specific day.
“I had no idea I was going through so much on that Tuesday. Reading it a year later brought me to tears.”
✦ Your Time Capsule from one year ago
Hey there,
One year ago today — Tuesday, June 9, 2025 — you wrote this:
“Had coffee with Mia for the first time in two years — it felt like no time had passed at all.”
We hope this finds you well. Keep writing — your future self is listening.
— DayDot
What people say
“I've tried every journaling app. DayDot is the only one I've kept up with for more than a month. The one-sentence rule removes all friction.”
“Getting my first Time Capsule email was surreal. I completely forgot writing it. Reading it a year later felt like meeting an old friend.”
“The locking mechanic is genius. No agonising over edits. You wrote it, it's done. It teaches you to be honest in the moment.”
Pricing
No credit card required to begin.
Free
Start writing immediately
Pro
Billed $19.99/year · Save 44% vs monthly
Questions
One sentence. That's all. Start today, and in a year you'll have 365 letters to yourself — each one a small proof you were here.
Write your first sentence →Free forever · No credit card · Takes 10 seconds