About SIPdia

What SIPdia is

SIPdia is a SIP softphone, a SIP client that registers with your PBX or SIP provider and places and receives calls. It does not sell phone service or numbers. It focuses on doing the phone part well on macOS, iPhone and iPad: clear setup, encrypted signaling and media where the server allows it, hold, transfer, recording on your own device, and the PBX features people use daily.

Who makes it

SpaGreen Creative develops SIPdia. The Mac and iPhone apps are native SwiftUI apps that share one call engine, one settings format and one design, so the experience is the same across devices.

What it is built on

The call engine is baresip 4.12 with libre, Opus and OpenSSL, all under permissive open-source licences. Their notices and full licence texts are shown inside the apps under Acknowledgements.

Principles

• Say what it does. The feature list is checked against the apps. Platforms and capabilities that do not exist yet are labelled as such.
• Your data stays yours. SIP accounts, passwords, call history and recordings stay on the device. Contacts you save in SIPdia sync through our server so they reach your other devices. The apps contain no analytics or advertising. See the privacy policy.
• Standards first. SIP over UDP, TCP and TLS, SRTP, STUN and ICE, DNS SRV, Opus and G.711. If your server follows the standards, SIPdia should talk to it.
• Free to start. One account is free for as long as you like. SIPdia Premium funds development.