Delta/Android Downloads (Beta)

Beta testing on Google Play Get it on F-Droid

Delta/Android is the most feature-rich and stable DeltaChat app.

Delta/Desktop Downloads (Beta)

Delta/Desktop is well usable and can be operated standalone or in conjunction with Android or iOS.

Delta/iOS on TestFlight (Beta)

Download on Apple AppStore

Delta/iOS supports basic functionality but not all features offered by Android or Desktop. Betas are distributed via Testflight.

Verify Downloads

For Android, you can verify the signing certificate on the APK matches one of the following SHA256 fingerprints:

To print the SHA256 fingerprints of the APK signing certificate you can use eg.
keytool -list -printcert -jarfile <APK-file>