Visualize the Spectrum
See the invisible. Stream raw waterfall data directly from KiwiSDR, OpenWebRX, WebSDR, and FM-DX Webservers to explore the radio spectrum in real time on a fluid, hardware-accelerated canvas.
Listen to Anything, From Anywhere
Echo turns your iPhone and iPad into a global radio receiver. Browse 2,000+ KiwiSDR, OpenWebRX, WebSDR, and FM-DX Webservers to hear shortwave, aviation, numbers stations, and distant FM in real time.
As seen on Radio World
As seen on RTL-SDR.com
As seen on SWLing Post
Global Access
Browse thousands of community-hosted receivers on an interactive world map. Filter by server type and jump into any receiver in seconds.
Smart Scanner Mode
Turn any remote receiver into a hands-free band scanner. Cycle through saved frequencies and curated libraries to catch aviation, maritime, military, and other active signals.
Find Nearby Receivers
Sort the receiver network by distance to surface nearby stations first, then jump in to hear local aviation, repeater, emergency, and regional radio activity.
Dial In With Precision
Manually enter exact frequencies and switch between precise modulation modes to lock onto specific signals with confidence.
Built for Real Radio Listening
Maps, live waterfalls, scanning, logging, and frequency tools designed for iPhone and iPad.
Global Map
Native MapKit-powered map to visually explore the worldwide receiver network. Filter by KiwiSDR, OpenWebRX, WebSDR, or FM-DX Webserver.
Live Waterfall Display
Render live spectrum data from supported servers on a smooth, hardware-accelerated waterfall, with native decode modes where available.
Scanner Mode
Automatically cycle through a list of stations or presets at a set interval — like a police scanner for the entire radio spectrum.
Hot List
Your most-played stations and the current hot list surface right on the home screen, so there is always something to tune into.
Offline Frequency Library
A searchable local database of 9,000+ global frequencies, available without an internet connection.
Station Logging
Integrated database for saving frequencies and station details.
Quick Presets
Optimized touch interface for instantly switching bands.
Background Audio
Keep listening while your screen is locked or while you use other apps.
Go Beyond Listening
Echo Pro turns the signals you hear into something you can keep, read, and understand. Record broadcasts, follow speech live as text, transcribe saved audio, translate supported languages, and keep your recordings in sync with iCloud.
iCloud Sync
Keep your recordings, audio, and related details in sync across your Apple devices with iCloud.
On-Device Intelligence
Transcription, language detection, and translation happen directly on your device, keeping Echo Pro fast, private, and available without handing your audio off for processing.
Search Your Recordings
Find past recordings in seconds and jump back to the stations, frequencies, and broadcasts you want to hear again.
Built Into Echo
Record, transcribe, and translate without leaving the listening experience. Echo Pro works directly alongside the receiver and tools you already use.
Follow the Conversation Live
Live Transcription puts spoken words on screen as you listen, making broadcasts easier to follow in real time without leaving the receiver.
Keep What You Hear
Record directly from the receiver and come back anytime. Echo keeps your recordings organized with their station, frequency, mode, date, duration, and transcript when available.
Understand More of Every Broadcast
Turn saved recordings into timestamped transcripts and translate supported languages into English, all on device. Read back what was said, copy the text, save it, or share it when you need it.
Privacy is Not Optional
Zero tracking. No analytics. No ads. Echo keeps your listening private with on-device transcription and translation, plus private iCloud sync with Echo Pro.
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