Use case
Live audio roomsfor your app
Hosts, speakers and a listening audience, with people moving on and off stage in real time. Built for social audio, voice chat room and audio party apps.
The anatomy of an audio room
An audio room SDK for apps where people gather to talk and listen.
Every room has a stage and an audience. Your app decides the layout; the SDK carries the audio and tells you who is speaking.
FlutterWebAndroidiOS
- Invite up
- A listener joins the stage and can speak.
- Move to audience
- A speaker goes back to listening.
Hosts
Run the room: open it, decide who speaks and keep the conversation on track.
Speakers
On stage with their microphones live. The SDK reports who is talking, so your app can light up their seat.
Audience
Listens to the stage in real time without publishing audio. Audio rooms are built for large listening audiences.
Stage moves
Hosts invite a listener up to speak and move a speaker back to the audience while the room keeps running.
Running the room
What Gravix Cloud does, and what stays in your app.
Moderation
Hosts can mute a speaker and move them back to the audience. Your server decides who may join a room at all, because every person needs a token from it.
An AI room host
An AI voice agent can join the room like a person: welcome newcomers, explain how the room works and answer questions out loud.
See AI voice agentsGifts and reactions
Gravix Cloud carries the live audio. Gifts, coins, reactions and chat run through your own app backend, so payments and moderation stay in your hands.
Room size
Tell us how large your rooms get and we will confirm the right plan for them.
Build it with Flutter
Speakers publish their microphone; listeners join the same room and listen. The token comes from your server.
- 01
Create a project
Get your App ID and App Certificate from the Gravix Cloud console. The App Certificate stays on your server.
- 02
Issue a token from your server
Your backend signs a short-lived access token for each user and room, after your own login and checks.
- 03
Join from the app
Join with the SDK. Publish the microphone only when the person is on stage.
SDKs: Flutter, Web, Android, iOS
Flutter: flutter pub add gravix_rtc
Web: npm install gravix-rtc
import 'package:gravix_rtc/gravix_rtc.dart';
final room = GravixRoomService();
// Your server signs the token. The App Certificate never ships in the app.
final tokens = GravixTokenProvider.endpoint(
Uri.parse('https://api.example.com/rtc/token'),
headers: {'Authorization': 'Bearer $session'},
);
// Speakers publish their mic; listeners join the same room and listen.
final joined = await room.connectWithTokenProvider(
tokenProvider: tokens,
request: GravixTokenRequest(room: roomId, identity: userId, name: displayName),
publishMic: isOnStage,
enableVideo: false,
);
room.activeSpeakers.addListener(() => glowSeats(room.activeSpeakers.value));
// Leaving the room.
await room.disconnect();Audio room questions
What roles does an audio room have?
Hosts run the room, speakers talk on stage, and the audience listens. Hosts can invite a listener up to speak and move a speaker back to the audience in real time.
How large can an audio room be?
Audio rooms are built for large listening audiences. Tell us your expected room size and we will confirm the right plan. Call or WhatsApp +880 1703-449000, or email sales@gravixcloud.com.
Do gifts and reactions go through Gravix Cloud?
No. Gravix Cloud carries the live audio. Gifts, reactions, coins and chat run through your own app backend, so payments and moderation stay in your hands.
Which platforms can I build on?
Gravix Cloud provides SDKs for Flutter, Web, Android and iOS. The Flutter package is gravix_rtc.
Launch your audio room app
Tell us about your rooms and your audience. Call, WhatsApp or email our team.