Letters for two, sealed until the moment arrives
Write a letter to one person and seal it — to open anytime, or on a date you choose. Titles, messages, photos, and voice notes are encrypted on your iPhone before they leave it, so nobody in between can read them, not even the server that carries them. No email, no password, no tracking. Requires iOS 26.
Not on the App Store yet. Install Apple's TestFlight app, then open the link to get the current build.
Sealed until the moment
Pick a date and time, or leave it open anytime. A scheduled letter stays sealed on the server too — its title and text are withheld until the moment actually passes.
End-to-end encrypted
Every letter is encrypted on your iPhone with a key only your two phones hold. The server stores ciphertext and never sees a word of it.
Just the two of you
One partner, paired by a private invitation. No feed, no followers, no group to be added to. Compare a safety number in person to confirm you are writing to each other.
Photos and voice notes
Add a photo or record your voice. Attachments are encrypted on your iPhone with the letter they belong to and stay sealed until it opens.
No email, no password
Setup hands you a recovery key to keep in your password manager. There is no address to collect and no profile to build.
No tracking
No analytics, no ad SDKs, no third-party frameworks. Notifications carry a name and nothing from inside the letter.
Changelog
Nothing released yet. Version notes will show up here once the first build is on the App Store.
Privacy
Open When collects no personal data. See the privacy policy.
Support
Email hey@enrouteapps.com.