Talking to a group? A broadcast room instead of a group call
A WhatsApp or Messenger group call works for friends. For a tour, a class or an audience it means collecting phone numbers or accounts, a participant limit and people talking over each other. SpeakMic gives the group a link instead.
Side by side
| Feature | SpeakMic | WhatsApp, Messenger |
|---|---|---|
| No phone number or account needed | Yes | No |
| No app to install | Yes | No |
| More than 32 people in one call | Yes100 listeners, 600 with relay rooms | NoWhatsApp group calls: 32 |
| Listeners can't talk over the speaker | Yes | No |
| Push-to-talk walkie-talkie | Yes | Partlyvoice messages instead |
| Join by QR code without being added to a group | Yes | No |
| End-to-end encrypted calls | Partlyencrypted in transit, not end to end | Yes |
| Most people already have it | No | Yes |
Comparison as of October 2026, based on publicly available information. Features of other products change — check their current terms.
Where SpeakMic is the better fit
Groups of strangers
Tour guests, conference attendees or a class join by QR code — nobody shares a phone number or gets added to a group chat.
One voice, clearly
In a broadcast room only the speaker talks: no background noise from 30 open microphones, no one talking over the guide.
Bigger than a call
100 listeners per room, 600 with relay rooms — past the limits of a group call.
Where WhatsApp or Messenger is the better fit
Friends and family
Everyone already has the app and each other's numbers, and everyone wants to talk — a group call is simpler.
End-to-end encryption
WhatsApp calls are end-to-end encrypted. SpeakMic encrypts audio in transit, but in larger rooms it passes through a media server, so it isn't end to end.
Frequently asked questions
How many people can join a WhatsApp group call?
Up to 32 in a WhatsApp group call. A SpeakMic broadcast room takes up to 100 listeners, and relay rooms extend it to 600.
Do guests have to give their phone number?
No. Guests join a SpeakMic room with a link or QR code, without a phone number, an account or an app.
Is SpeakMic encrypted?
Audio is encrypted in transit (WebRTC). It isn't end-to-end encrypted: in larger rooms it passes through a media server. For private conversations among friends, WhatsApp's end-to-end encryption is the stronger choice.
Built for real situations
Tour guides
Great for city walks, museum tours, and food tours — your whole group hears you clearly through their own phone, no rental headsets.
Learn more→Weddings
Translate the vows and the speeches for guests from abroad — on their own phones, with no gear to rent.
Learn more→Walkie-talkie
Ideal for festivals, volunteer teams, and event crews — push to talk and your whole team hears you, no radios required.
Learn more→SpeakMic vs Zello
Push-to-talk in the browser with no app or account — and where Zello's native apps still win.
See the comparison→App vs PMR446 radios
Range, privacy, cost and delay — when phones beat licence-free radios, and when they don't.
See the comparison→All comparisons
Zello, radios, tour guide systems, interpretation platforms, Zoom and WhatsApp side by side.
See the comparison→Give your group a link instead of a call
Create a free broadcast room in seconds — no sign-up required.
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