JabJab

Privacy-first XMPP messenger for Android.
No data harvesting. No ads. No accounts sold. Ever.

JabJab is a hard fork of Conversations — the gold-standard open-source XMPP client — extended with stickers, stories, microblogging, dynamic reactions, themes, app lock, and a built-in updater.

Download APK · Source · Website

What's new in JabJab

Everything in Conversations, plus:

🎭 Stickers

Custom sticker packs — send, receive, and create your own. Stickers are stored on your device and never sent to third parties. Uses WebP for small file sizes.

📸 Stories

Ephemeral photo and video stories that vanish after 3 days. Share moments without the algorithm pressure — no like counts, no engagement metrics. Compatible with Monocles and other pubsub-social-feed clients.

📝 Microblog

Publish long-form posts via XMPP PubSub (XEP-0277). Posts appear at blog.xmpp.tel and are federated — readable by any XMPP client that supports PubSub. Offline drafts sync automatically when you reconnect.

😄 Dynamic Reactions

React to any message with any emoji. Reactions are tracked per-message, per-account, and sync across devices.

🎨 Themes

Seven built-in themes including light and dark variants. Adjustable bubble shapes and font size.

🔐 App Lock

PIN lock with biometric unlock support. Lock the app automatically on background.

🔄 Built-in Updater

Checks for new APKs in the background and installs in one tap — no app store required.

🔀 Multi-Share

Share a file or text to multiple contacts at once from inside the app or directly from your gallery. Files are uploaded once and forwarded — no duplicate uploads.

⏩ Audio Speed

Playback speed toggle for voice messages: 1× / 1.5× / 2×.

🌐 Message Translation

Built-in translation for incoming messages — read in your language, reply in theirs.

Security

• OMEMO end-to-end encryption (Signal protocol) — enable per conversation
• TLS for all server connections — even without OMEMO
• DTLS for audio/video calls
• Hosted in Iceland · zero personal data at the server level · open source

Build

JAVA_HOME=/usr/lib/jvm/java-21-openjdk-amd64 ./gradlew assembleConversationsFreeDebug

APK: build/outputs/apk/conversationsFree/debug/

Optional build flags:

# With in-app update checker
-PUPDATE_SERVER_URL=https://your-update-server/

# Custom GIF API key
-PTENOR_API_KEY=your_key

Requirements: JDK 21, Android SDK (minSdk 23, targetSdk 36).

Migrating from Conversations

Go to Settings → Create Backup in Conversations, then Settings → Restore Backup in JabJab. Your accounts, contacts, and full message history transfer instantly.

Protocol support

Links

• Website: xmpp.tel
• Blog: blog.xmpp.tel
• Source: git.xmpp.tel/jabjab
• Upstream Conversations: codeberg.org/iNPUTmice/Conversations

License

JabJab is free software licensed under the GNU GPL v3.
Upstream Conversations © Daniel Gultsch.