About Calln
Calln is a free anonymous voice calling platform built on a simple belief: genuine human conversation should not require you to give up your identity, your data, or your privacy. We built Calln to make that possible for anyone, anywhere, in seconds.
Our Story
Calln was built in response to a growing problem: the internet has become an increasingly performative place. Social media rewards curated identities, polished content, and engagement optimised for algorithms rather than human connection. Video chat platforms add visual pressure that makes conversations feel like auditions rather than conversations.
When Omegle — the original anonymous chat platform — shut down in late 2023, millions of people lost the one place online where they could simply talk to another human being without an audience. We built Calln to fill that gap, but with modern technology, better privacy, and a genuine commitment to safety that Omegle never had.
Calln launched as a web application and has since expanded to Android, bringing anonymous voice calling to mobile users with the same commitment to privacy and simplicity that the web version is known for.
Calln by the Numbers
What We Stand For
🔒 Privacy First
We collect the minimum data necessary to run the service. No accounts, no profiles, no recordings. Your conversations are yours alone.
🆓 Free Forever
Calln will always be free to use. The website is supported by advertising. The mobile app is ad-free. No paywalls, ever.
🛡️ Safety Matters
Every call has a Report button. Reported users are banned immediately. We take community safety seriously and act on every report.
🌍 Genuinely Global
Calln connects people across borders. Our country filter lets you choose who you talk to, but the default is always the whole world.
How the Technology Works
Calln is built on WebRTC — the same open standard used by Google Meet, Discord, and most modern communication platforms. Here is what that means for you in plain language:
- Peer-to-peer audio — once a call is established, your voice travels directly from your device to your partner's device. Our servers are not in the audio path at all.
- Encrypted by default — WebRTC encrypts all audio using DTLS-SRTP. This is mandatory in the WebRTC standard and cannot be disabled.
- Signalling server — our server handles matching you with a partner and exchanging the technical handshake needed to start the call. Once the call starts, the server steps out completely.
- TURN relay — in cases where a direct peer-to-peer connection is not possible (strict corporate firewalls, certain mobile networks), audio is relayed through a TURN server. Even in this case, audio is encrypted end-to-end.
- No recordings — we have no technical mechanism to record calls. The audio never passes through our servers in a form we could capture.
Contact Us
Have a question, a concern, or want to report something? We read every email and respond within 30 days.