Echo: Global SDR Receiver by Mark Garrison Jr.
SDR Tuner, Shortwave & Scanner





177+ iOS apps curated and reviewed
Echo is the household name in sdr, but it's far from the only option. We track 177+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.















Experience full-featured radio operation on your iPad or iPhone with this official FlexRadio Systems® client. Enjoy compatibility with SmartSDR versions 1, 2 (including SmartLink), and 3 (including MultiFlex and SmartControl), along with a range of features like FT8/FT4 support, CW decoding, SmartLink remote access, and more. Discover seamless control with your FlexRadio Series-6000 SDR device and enhance your radio experience today.


Explore a virtual Ham Radio transceiver app offering a trial with 10-160m virtual HamSphere HF bands, various modes, filters, and extras to enhance your experience. Engage in amateur radio communication on multiple frequencies with ease.






Control your Icom Transceiver on the go with this iOS app. Operate your radio, access logbooks, and use integrated tools, all from your iPhone. Learn more at ham-radio-apps.com.


This software defined radio receiver app allows users to listen to various radio signals and view RF spectrum and waterfall on their iOS devices. It connects to networked USB peripherals, requiring a high-bandwidth network connection and an external server, such as a Raspberry Pi or Mac, to access and control the radio signals.


An advanced client application for Rdio Scanner project with premium features available through an annual subscription. Subscribe to unlock enhanced functionality and access the privacy policy and terms.




Prepare for your Technician Class FCC Amateur Radio License exam with this app. Study official questions, take quizzes, and simulated exams while tracking your progress. Find exam sessions near you and stay updated on ham radio news.


Discover, locate, and update repeaters worldwide with a comprehensive directory app. Find repeaters easily, view detailed information, and submit updates effortlessly. Download now for free!




This software defined radio application demodulates and plays AM and FM signals received by a compatible radio, allowing users to listen to various communications and broadcasts. It offers features such as adjustable squelch, filters, and signal strength indicators, and can stream audio to multiple devices or play over AirPlay.




This software-defined radio application allows experimenters and amateur radio enthusiasts to construct a portable receiver, using additional hardware to receive live signals. It offers various features, including multiple receive modes, selectable bandwidth, and display options, and can be used to play recordings or receive live signals with the right equipment.


Access the EchoLink network on iOS for licensed Amateur Radio operators. Connect from anywhere with your validated account. Register as a user to get started and check www.echolink.org for more information.


This software-defined radio application allows users to interactively explore the RF spectrum, demodulate and play various signals, and collect frequencies using a panadapter and waterfall visualization. With access to over 600 servers worldwide, users can listen to radio shortwave bands without special equipment and explore the spectrum with features like wide band spectrum view, demodulators, and frequency bookmarks.

