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About Mercury

Mercury is a P2P encrypted messenger that connects you directly to the people you trust — no central servers storing your messages, no middlemen reading your data.

Every message and call is end-to-end encrypted using the Signal Protocol. Your conversations exist only between you and the person you're talking to.

Features:
- Peer-to-peer messaging — no server stores your chats
- Encrypted voice calls via WebRTC
- End-to-end encryption using Signal Protocol
- QR code contact discovery
- Works across networks and carriers
- Minimal permissions, no data collection

Mercury is built for people who believe private communication should actually be private.

Mercury details

Mercury is a free Communication app for Android with 10+ installs on Google Play and a 5.0/5 average rating from 1 rating. It was released on June 11, 2026 and last updated on July 20, 2026. It's developed by Unsync. It requires Android 7.0 or later.

Category: Communication
Rating: 5.0 / 5 (1 rating)
Installs: 10+
Price: Free
In-app purchases: No
Ads: No ads
Current version: 0.4.0
Requires Android: 7.0
Content rating: Everyone
Released: June 11, 2026
Last updated: July 20, 2026
Developer: Unsync

What’s new in Mercury

Fixes calls not connecting when the app was closed, and calls connecting with no audio between different networks. Fixes incorrect entries in the call log — answered, declined and outgoing calls are now recorded correctly. Messages now notify you while the app is closed. Notifications clear when you open a conversation. Unanswered calls stop ringing after 30 seconds.

Version 0.4.0 · Updated July 20, 2026