Listen to FM broadcasts, aircraft, marine, amateur radio, and weather stations. Connect to any rtl_tcp server and get a GPU-accelerated spectrum analyzer with crystal-clear audio in your pocket.
A real SDR client, not a toy
Six demodulation modes, GPU-accelerated visuals, and pro-grade controls — designed for iOS from the ground up.
Up and running in 3 steps
Plug in your RTL-SDR dongle, start the server, and connect from your iPhone. No cloud account, no subscription.
1. Start rtl_tcp on your server
Raspberry Pi, Mac, or any Linux box with an RTL-SDR plugged in:
rtl_tcp -a 0.0.0.0
2. Open CoronaSDR
Enter the server's IP and port, then tap connect. The built-in connection test verifies everything works.
3. Pick a mode and tune in
Try WFM at 100 MHz for your local FM station, or AM at 118–137 MHz for aircraft.
