Mercury
Unsync Communication
Peer-to-peer encrypted messaging and voice calls. No servers. No middlemen.
- Downloads
- 10+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Jul 21
- 2026 · v0.4.0
Screenshots
About Mercury
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.
What’s new
Version 0.4.0 · Updated July 21, 2026
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.
Alternatives to Mercury
Looking for apps like Mercury? Here are 6 similar Android apps on Google Play. The highest rated is Mercury Cards (4.7/5), and all 6 are free to download.
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MySudo - Identity Protection 4.3
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Illumine - Childcare App 4.5
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eSIM Plus: eSIM for Travel 3.5
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Mercury Cards 4.7
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KeepCalling International 4.5
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Mercury 4.5
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Mercury | – | Free | 10+ | Jul 21, 2026 | |
| MySudo - Identity Protection | 4.3 / 5 | Free | 500,000+ | Oct 19, 2026 | Compare |
| Illumine - Childcare App | 4.5 / 5 | Free | 100,000+ | Oct 21, 2026 | Compare |
| eSIM Plus: eSIM for Travel | 3.5 / 5 | Free | 1,000,000+ | Oct 1, 2026 | Compare |
| Mercury Cards | 4.7 / 5 | Free | 1,000,000+ | Oct 19, 2026 | Compare |
| KeepCalling International | 4.5 / 5 | Free | 1,000,000+ | Sep 22, 2026 | Compare |
| Mercury | 4.5 / 5 | Free | 100,000+ | Oct 27, 2026 | Compare |
Compare Mercury with the top alternatives: ratings, updates, ASO score and keyword gaps →