Sylk Mobile

Content rating
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About this app


* 1-to-1 audio and video calls
* Encrypted end-to-end messaging
* Encrypted end-to-end file transfers
* Synchronization of multiple devices
* Multiparty conferencing
* Call history entries management
* Native address book lookup
* Native OS telephony integration
* Support for multiple devices in parallel
* Support for multiple cameras
* Support for landscape and portrait modes
* Support for tablets and phones
* Interoperable with SIP clients
* Receive calls from the web
* Support for Self Sovereign Identity (SSI)

Sylk Mobile is part of Sylk Suite, a set of real-time communications applications using IETF SIP protocol and WebRTC specifications. With it you can call to any other SIP address and you can receive calls from SIP applications and WebRTC browsers.

The source code is available at
This project was funded through the NGI0 PET Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 825310.
Updated on
Aug 24, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What's new

Fix truncating text in Android 13 when bold font is used
Improve sharing menu