Latest downloads

One clear place to grab the current build for every platform.

These links are generated from the latest GitHub Release so the page stays current as new installers and bundles are published.

Windows

Windows installer with shortcuts, uninstall support, unread taskbar badges, local history, presence, and desktop calling.

Installer EXE 31.3 MB

Download for Windows Version 0.1.3+17 View release notes

macOS

Desktop macOS release for secure messaging, local chat logs, and direct/VPN-aware calling.

App bundle ZIP 50.4 MB

Download for macOS Version 0.1.3+17 View release notes

Linux

Linux x64 archive for people who want a straightforward unpack-and-run build.

tar.gz bundle 28.4 MB

Download for Linux Version 0.1.3+17 View release notes

Android

Android APK

Direct-install Android package for testing outside the Play Store.

APK 131.5 MB

Download APK Version 0.1.3+17 View release notes

Play

Android App Bundle

Play Store-ready Android App Bundle for publishing and staged rollout workflows.

AAB 78.7 MB

Download AAB Version 0.1.3+17 View release notes

Screenshots

First-run views across desktop, tablet, and mobile layouts.

A quick look at the same Backchat build adapting across wider desktop windows and tighter touch-sized screens.

Backchat desktop first-run sign-in screen — Desktop

Backchat tablet first-run sign-in screen — Tablet

Backchat mobile first-run sign-in screen — Mobile

What’s inside

Built for private conversation, not just polished screenshots.

Focused desktop experience

Contact-side unread counters, taskbar badges, quick contact switching, and conversation focus that feels like a real desktop messenger.

Local-first history

Conversation logs are cached per machine so your message history and unread state stay available locally without turning the server into your archive.

Presence and profiles

Contacts can see avatar, quote, and online state at a glance so the contact list works like a useful dashboard, not just a list of names.

Direct-friendly calling

Voice and video calls use WebRTC signaling with advanced routing controls for auto, direct/VPN-preferred, direct-only, or relay-only behavior.

Security snapshot

Practical encryption with room to grow.

Backchat already ships encrypted-message primitives, presence, and direct-call signaling. The project is structured so you can keep strengthening the transport and device story over time.

Encrypted messaging primitives

X25519 key exchange and AES-GCM are already in the app scaffold for message protection.

Direct media when possible

Voice and video attempt peer-to-peer routing first, with relay fallback as an option when network conditions need it.

Transparent release checksums

The latest release digests are published here so testers can verify exactly what they downloaded.

Verification

Latest asset SHA-256 digests

Generated from the latest GitHub Release metadata on March 29, 2026 at 16:12 UTC.

Asset	SHA-256
backchat-android-0.1.3+17.aab	1a46b70374f419a59372e86fe3fe5582ca57f25f93bd5a82bea46af549ce80a4
backchat-android-0.1.3+17.apk	18d55fc86126b046a33d8b1e91a95cff5a3845d756c06c354cd82608457d5bab
backchat-linux-x64-0.1.3+17.tar.gz	f387bf010e65a4a20847961fd8314b38ec8ab5ecbbf430e8ce9cd7502e63607c
backchat-macos-0.1.3+17.zip	30b2de5936afdea6fa52bf9f518e478b8e06410c17787fd539e15e07a16e6302
backchat-windows-x64-0.1.3+17-setup.exe	272fe638f8cf3b18dcf798b8d18ae43ec839c00e3bed0591ab2126ac731fc887
backchat-windows-x64-0.1.3+17.zip	54528ba6c20473bb3e280428d3b9bffcd8ca5546047377ef85474185c498289c