Listen to anything, from anywhere. Now with Echo Pro, record the airwaves, transcribe live radio, translate broadcasts, and sync recordings and more with iCloud.
Echo is the ultimate, natively-built iOS client for tuning into remote radio servers. Listen to anything, from anywhere. Dive into international shortwave broadcasts from Asia, monitor aviation communications over the Atlantic, discover mysterious numbers stations, or tune into distant FM stations across the globe, all from your iPhone, iPad, or Mac with Apple silicon.
Featured in Radio World, on RTL-SDR.com, and in the SWLing Post. Radio World's Nick Langan praised Echo's "thoughtfully designed interface," said he has "loved using" the app, and later described Echo Pro's transcription as "very responsive."
Designed for radio enthusiasts and curious listeners alike, Echo is a powerful aggregator that connects you to nearly 3,000 community-hosted Software Defined Radio (SDR) receivers. By integrating these reliable streams into a dedicated native environment, Echo delivers true background audio, high-performance mapping, and features that are difficult to achieve in a standard web browser.
KEY FEATURES
Global Interactive Map & Search
Visually browse thousands of remote SDR servers worldwide using our smooth, native MapKit clustering engine, or instantly search nearly 3,000+ receivers by name or location.
Unmatched SDR Compatibility
Seamless support for KiwiSDR, OpenWebRX, WebSDR, and FM-DX Webserver architectures. Want to listen to a private node? Add your own unlisted servers with custom URL entry.
Scanner Mode
Automatically cycle through station lists at set intervals.
Advanced Tuning & Analytics
• Smart Manual Tuner: Instantly tune by entering kHz or MHz; Echo intelligently detects the band format.
• Audio Engine Passthrough: Interfaces directly with server-side signal processors for broad compatibility with waterfall rendering, plugins, and decoding extensions.
• Intelligent Profile Switching: Automatically switches to the correct server band profile as you tune on supported networks.
Offline Frequency Library & Logging
Search an offline, built-in EIBI database of over 9,000 global shortwave and utility frequencies. Save and log your favorite stations to your local device.
Uninterrupted Background Audio
Keep listening when your screen is locked or while using other apps. Our custom audio bridge intercepts complex SDR streams to provide true iOS background playback and lock-screen controls.
ECHO PRO
Take Echo further with recording, live transcription, translation, and iCloud sync.
• Record the Airwaves: Record live radio and revisit important moments anytime.
• Live Transcription: Turn live radio into on-screen text as you listen.
• Translation: Transcribe foreign-language broadcasts and translate them into readable English.
• iCloud Sync: Sync recordings, transcripts, translations, notes, favorites, saved servers, and supported settings across your Apple devices.
Echo Pro requires a monthly or annual subscription.
Privacy First
Zero tracking. No analytics, no proprietary tracking servers, and no ad IDs. Your listening activity is not tracked. Echo Pro syncs supported data through your private iCloud account.
Built with speed, aesthetics, and privacy in mind, Echo ensures a fast, premium listening experience. Start exploring the airwaves today!
VoiceOver & Accessibility Support
• Station cards, player, recording, and scanner controls announce meaningful context to VoiceOver
• Scanner controls (play/pause/skip/favorite) are fully labeled and navigable
• Station changes, server connections, and scanner state are announced in real-time
• Reduce Transparency support: glass effects swap to solid backgrounds when enabled
• Reduce Motion support: animations are simplified when enabled in iOS settings
• Decorative elements hidden from assistive technology for a cleaner navigation experience
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
When I was first studying for my ham radio license a couple years ago, I discovered the joy of Web SDR and all that it allowed me to listen to and learn from. In many ways, it is very similar to scanning through a short wave radio, and pulling up stations from around the world. But the web application struggled on mobile browsers, and it was always a bit of a ramshackle experience. Echo has found a way to make this tool available, user-friendly, and dead simple for iPhone users. It is greatly increased my enjoyment of listening in, and meant I don’t have to be at my laptop to really get the full experience. Thank you so much! Keep up the good work!
❤️ Excellent SDR app for radio enthusiasts! ❤️
lmk2055
Echo is a fantastic app for anyone interested in SDR, shortwave, ham radio, aviation, and global radio listening. The interface is clean, fast, and very easy to use, with access to thousands of remote SDR receivers around the world. I especially like the interactive map, background audio, scanner mode, and the ability to explore real radio signals directly from my iPhone or iPad.The app feels polished, privacy-friendly, and clearly built with care. A must-have for radio hobbyists and curious listeners alike! 📡🌍🎧
Thank you!
Bob Lefvits
I have been wanting an app just like this for so long, use web SDRs often but this makes it so convenient to listen from the phone/on the go rather than on the computer. Even just for AM/FM listening it’s vastly superior to all the “radio” apps that seem to just use the web streams of stations rather than actual radio. Searched many times for an app like this since it just seemed like something that should exist, thank you for making it real!
Developer Response
Thank you! I’ve used it a lot myself just for AM/FM listening as well. If you ever think of any features that would make tuning around even better, definitely let me know.
Excellent
FL-4
Thank you. iOS has been needing an app like those for way too long! Function and interface are flawless and easy to navigate so far for me. Primary use is amateur radio. I can finally leave the app playing in the background without worrying about my screen timing out, and I can navigate to other phone or tablet functions like email while still listening. I originally used during work travel for listening to a net that I frequent back home. I quickly realized this app is great for listening to so much more. 5 stars all day long. Thank you!!
Echo 1.5 introduces Echo Pro, along with new ways to capture, understand, and revisit the airwaves.
• Record live radio and build your own recording library
• Transcribe live broadcasts on device as you listen
• Translate supported transcriptions into English
• Sync recordings, transcripts, translations, notes, favorites, saved servers, and supported settings across your Apple devices with iCloud
• Access and play your synced recordings across devices
• Improved accessibility and VoiceOver support throughout Echo
New in 1.5.3:
• Support for iPhone Duo
• Receivers stay available even if the receiver directory can't be reached
• More reliable directory recovery after an interrupted or failed refresh
• Improved VoiceOver, Dynamic Type, and Reduce Motion support, with larger touch targets in the recording player
• Simplified Global Database categories
• Additional fixes, refinements, and performance improvements
Everything you already use Echo for remains free. Listening, tuning, the global map, scanning, frequency search, and connecting to supported servers do not require an Echo Pro subscription.
Echo Pro features require a monthly or annual subscription.
Version 1.5.3
The developer, Mark Garrison Jr., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Voice Control
Dark Interface
Differentiate Without Color Alone
Sufficient Contrast
Reduced Motion
Information
Seller
Mark Garrison Jr.
Size
12.6 MB
Category
Utilities
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.