Leave nothing unsaid.
Write letters, notes, and legacy messages for your children, partner, or grandchildren. Choose exactly when they're delivered — end-to-end encrypted, on your terms.
AI-assisted writing helps you find the right words.
How it works
Three steps. Total control.
Write your message
Chat with an AI assistant to craft your message — it helps you say exactly what you mean. Format it, revise it, take your time.
Set your conditions
Choose a date, a recurring check-in, or a manual trigger. The delivery is entirely on your terms.
It's delivered — privately
Your recipient receives it end-to-end encrypted. You remain in full control until the moment it matters.
Features
Everything you need. Nothing you don't.
Rich text. Multiple recipients. Full control.
Compose messages with formatting, schedule them for a specific date, or attach conditions. Send to one person or many — each message managed independently. An AI assistant helps you find the right words.
Use cases
The messages that matter most.
Legacy messages for children
“A letter to your child, delivered on their 18th birthday — written when they were too young to understand.”
Partners
“Final financial instructions for a spouse, locked until they're needed, impossible to intercept.”
When illness changes things
“A message of love, written while you still can — sent only when the time is right. Because some things are easier to say when there's nothing left to lose.”
Messages for grandchildren
“An annual message arriving on the same date every year — your words in their inbox, long after you might be there to send them.”
What's next
What's coming next.
iOS App
TimeLock is live on Android. The iOS app is in active development and coming soon — the same experience, built for Apple devices.
Vault Access
Attach documents, passwords, and files alongside your messages for posthumous release. A complete digital estate — private, encrypted, yours.
Annual Recurring Messages
Send the same message every year — a birthday letter, an anniversary note, a reminder of love — delivered automatically, on schedule, forever.
Common questions
What people ask before they start.
Security architecture
Your words are yours. Full stop.
Trust shouldn't require faith. We've designed TimeLock so that the security properties are a function of the architecture — not our intentions.
Read the full privacy policy →Encrypted on your device
Messages are encrypted client-side before they ever leave your phone. What our servers receive is already unreadable.
Zero-knowledge servers
Our infrastructure never holds decryptable content. Even a full server breach exposes nothing readable.
No employee access
No member of the 180Vault team can read your messages. The architecture makes it impossible, not just prohibited.
Cryptographic delivery triggers
Delivery conditions are cryptographically verified — not just a flag in a database anyone can flip.
Early Access
Be first. Stay private.
TimeLock is available now on Android. Sign up and we'll let you know the moment iOS launches — and not a message before that.