Lumicall review
A free, open-source SIP client for Android users who want encrypted internet calls.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Lumicall is a free Android app for internet phone calls over SIP, aimed at individuals and small organizations that already have a compatible SIP service. It can call other apps and corporate telephone systems, with account setup using a SIP address and password. The project publishes source code under the GNU General Public License, and distributes the app through F-Droid, Google Play, and direct APK download. A separate browser-based calling service is described on its website, but Lumicall itself is primarily an Android client.
Encryption options are central to the app's appeal. Lumicall supports ZRTP, which provides end-to-end encryption when both callers support it and displays a short authentication string for comparison. It also supports SRTP and TLS, alongside ICE NAT traversal. These capabilities suit SIP users who want encrypted calling options and can coordinate compatible settings with their calling counterpart or SIP provider. The published feature set centers on voice calls; buyers seeking video calling or group calls should consider another product.
Its ecosystem fit is practical for users of Asterisk, FreeSWITCH, Kamailio, and repro, but Lumicall depends on an existing compatible SIP service rather than replacing that infrastructure. The website describes a separate browser calling service, so web use should not be treated as the same Android app experience. Community is the listed support channel, and the project’s current development activity is unclear from the available published information. Choose Lumicall for a free, open-source Android SIP client when its supported calling and encryption modes fit; look elsewhere if you need broader collaboration features or a clearly maintained commercial support path.
Lumicall pros and cons
- Where it wins
- ZRTP, SRTP, and TLS support for SIP calling
- Works with Asterisk, FreeSWITCH, Kamailio, and repro
- Free app with source code published under the GNU General Public License
- Where it doesn't
- Android app focus; browser calling is a separate service
- Requires a compatible SIP account configured with an address and password
- No confirmed video calling or group-call support
Lumicall fact sheet, pricing and score →
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