SIGNAL
On Air Worldwide

The World is Listening

Tune into 58,000+ live radio stations and 10,000+ TV channels from every corner of Earth. Meet people. Explore countries. Travel the world.

📻 Radio

58,000+ Live Stations Worldwide

From Reykjavík jazz cafés to Rio samba parties — spin the dial and travel the airwaves. Warm analog crackle, digitally delivered.

Signal · FM
📻
58k+
Stations
📺 TV

10,000+ Live Channels

News from Tokyo, telenovelas from São Paulo, football from Manchester. The whole planet, on channel one.

Signal · FM
📺
10k+
Channels
👥 People

Meet the World in Real Time

Chat, share songs, swap stories. Every conversation is a tiny bridge across a border.

Signal · FM
👥
1M+
Conversations
✈️ Travel

Explore Every Corner of Earth

Country by country. City by city. Discover places you'd never book a ticket to — and then book one.

Signal · FM
✈️
200+
Countries
Our Vision

We believe the world becomes a better place when people connect across borders through music, stories, and shared moments.

SIGNAL is our invitation to the world.

How it works

Three taps to the other side of the world.

01
Spin the globe

Drag Earth, drop a pin. Every country is one gesture away.

02
Pick a signal

Tune a radio dial or scroll live TV. No sign up, no wait.

03
Say hello

Chat with locals listening to the same station in real time.

By the numbers

A planet's worth of frequencies. In your pocket.

58,000+
Radio stations
10,000+
TV channels
200+
Countries
24 / 7
Always on air
Postcards from listeners

Voices from every longitude.

Fell asleep to a jazz café in Lisbon. Woke up to morning news in Nairobi. Best travel app I never packed.
M
Mina
Seoul, KR
Talked football with a stranger in Buenos Aires while their local station played. Now we text every match day.
J
Julien
Lyon, FR
I run a taco truck and keep SIGNAL on all shift. Customers guess the country. Best tips I ever made.
R
Rosa
Austin, US
FAQ

Questions, answered.

Is SIGNAL really free?+

Yes. Every station, every channel, every conversation. No account required to start listening.

Do I need Wi-Fi?+

Any connection works — 4G, 5G, Wi-Fi. Streams auto-adjust so you can listen on the metro or a mountain.

Can I request a station or channel?+

Absolutely. Tap the plus in-app or email us — most requests go live within a week.

How is my data handled?+

We collect the minimum needed to keep the app running. Full details in our privacy policy.

The technology behind SIGNAL

Built with precision.

58,549
Radio stations
10,170
TV channels
175
Countries
24/7
Auto health check
3D Globe

Real-time WebGL Earth

Satellite-textured 3D globe built on Three.js with real-time day/night terminator sync, great-circle arc travel animation, and GeoJSON border rendering.

Three.jsWebGLGeoJSONPoint-in-polygon
Data ingestion

Golden Angle Spiral Geocoding

Paginated ingestion from Radio Browser API → 3-stage geocoding → golden angle (137.5°) spiral algorithm for uniform distribution of overlapping pins. Processes 58,549 stations.

Radio Browser APIGeoNamesGolden angle spiraliptv-org
Health monitoring

Automated Stream Health Check

Detects actual audio byte flow (minimum 2KB) — not just HTTP status codes. Checks 1,000 stations per hour in parallel. Deactivates on first failure.

httpx async streamAPSchedulerSemaphore CONCURRENCY=20
Real-time presence

WebSocket Live User System

WebSocket-based real-time presence, match requests, and 1:1 chat. Security isolation via Supabase RLS. Broadcast managed by ConnectionManager.

WebSocketSupabase RLSFastAPI
Multilingual

Real-time Chat Translation

Auto language detection based on nationality, powered by Google Translate API. Supports Korean, English, Japanese, Chinese, Spanish, French, and more.

Google Translate APIAuto language detect
Infrastructure

Full-stack Deployment Architecture

Lovable (React) frontend → Railway (FastAPI) backend → Supabase (PostgreSQL) database. iOS via Codemagic CI/CD, Android via PWABuilder TWA.

FastAPI + RailwaySupabase pgvectorReact + LovableCodemagic CI/CDPWABuilder TWA
Tune in

Earth is broadcasting.
Are you listening?

Download SIGNAL and let the world find you.