Messaging App
Development build channel — not a public release store.
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Install
- Download the APK on the Android device.
- Allow installing unknown apps for the browser/file manager you use.
- Open the file and confirm the installation (Android Package Installer).
- After installing once, later builds arrive through the in-app update flow.
Integrity: the APK is signed and its SHA-256 is published in the signed update manifest, which the app verifies before installing. Always prefer the in-app update over a manual install.