Demod

Software-defined radio for iPhone & iPad. Connect to an SDR server on your network or anywhere on the internet and explore the airwaves.

No hardware to plug in. Point Demod at a server you run — a Raspberry Pi, PC, or Mac with an SDR dongle — or browse hundreds of public receivers worldwide and start listening in seconds.

Supported servers

  • rtl_tcp
  • SpyServer (Airspy)
  • KiwiSDR
Demod showing a live spectrum and waterfall

Features

Live waterfall & spectrum

Metal-accelerated, smooth. Pinch to zoom, drag to tune, two-finger pan.

Every common mode

AM, NFM, WFM, USB, LSB, and CW, with adjustable bandwidth, gain, and squelch.

Public server browser

Find and connect to public SpyServers around the world — no hardware required.

Memories

Save and recall favorite frequencies; import and export as CSV.

Built for iPad too

A spacious layout with the waterfall front and center and controls in a side panel.

Private by design

No accounts, no tracking, no ads. Demod collects no data.