How Tellater works

Tellater is a time capsule for the things you want to say now but want them to read later.

1. Pick a vibe

• 🔮 Prediction: call it now, get the receipts later.
• ☝️ I told you so: for when they won't listen.
• 💛 Friend: hype them up from the past.
• 🎉 Occasion: birthdays, exams and big days.
• ⏳ Future me: a note to yourself.
• 💌 Crush: say it… just not yet.

2. Write it and pick the date

Write your message, choose who it's for, and pick when it opens: anything from 1 hour to 5 years away.

3. Hold to seal

Once sealed, the words are locked on our server and can't be changed, not even by you. Your friend gets a link with a countdown, and can lock in a guess about what it says.

4. It opens on their phone

On the day, the capsule opens with a reveal animation. They can react, and for predictions and I-told-you-sos, say whether you called it.

Why a phone number?

Each capsule is locked to the recipient's number, so only they can open it. Every account is a real number verified through WhatsApp, which keeps Tellater free of fake names and anonymous messages. Only the last 4 digits are ever shown.

Ideas

Need a starting point? Try 2027 predictions, a letter to your future self or open-when letters.

Seal your first message