Best Sdr Apps

177+ iOS apps curated and reviewed

4.1 avg rating
13 free apps
Updated June 2026

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.

Top Picks for Sdr

Echo: Global SDR Receiver#1

Echo: Global SDR Receiver by Mark Garrison Jr.

SDR Tuner, Shortwave & Scanner
Editor's Choice
🔧 Utilities
5.0(18 ratings)
Free
Echo: Global SDR Receiver screenshot 1
Echo: Global SDR Receiver screenshot 2
Echo: Global SDR Receiver screenshot 3
Echo: Global SDR Receiver screenshot 4
Echo: Global SDR Receiver screenshot 5
Echo: Global SDR Receiver screenshot 6

Tune into thousands of remote radio servers worldwide from your iPhone or iPad. Explore shortwave broadcasts, aviation communications, and more with a global interactive map and advanced tuning features. Enjoy uninterrupted background audio and a privacy-first experience.

CoronaSDR: RTL-SDR Client#2

CoronaSDR: RTL-SDR Client by Alien Systems S.R.L.

Low-Latency rtl_tcp Receiver
Strong Contender
🔧 Utilities
5.0(5 ratings)
Free
CoronaSDR: RTL-SDR Client screenshot 1
CoronaSDR: RTL-SDR Client screenshot 2
CoronaSDR: RTL-SDR Client screenshot 3

This application allows users to connect to and control RTL-SDR servers on their local network. It provides live spectrum and waterfall displays, various demodulation modes, and DSP controls for audio filtering and signal tuning. Users can save favorite stations and adjust RF settings.

More Sdr apps to explore

4
SmartSDR™ - FlexRadio Systems®
SmartSDR™ - FlexRadio Systems®
SmartSDR™ - FlexRadio Systems®
Official SDR Client
$79.99
$99.99 | 20% OFF

Control your FlexRadio SDR device from your iPad or iPhone. Access nearly all features of the desktop client, including digital modes, signal analysis, and remote operation via SmartLink. Requires compatible FlexRadio hardware.

FT8 and FT4 supportSSTV TX and RXAPRS TX and RX
🔧 Utilities
(129)
free
5
HamSphere 5.0
HamSphere 5.0
HamSphere 5.0
Virtual Ham Radio Transceiver
Free

This virtual ham radio transceiver simulates HF bands from 10-160m, including 6m, 2m, and 70cm. It features USB, LSB, and CW modes, power settings, and built-in audio filters. Additional instruments can be unlocked via in-app purchases.

Virtual HF bands (10-160m)6m, 2m, and 70cm bandsUSB, LSB, and CW modes
🌐 Social Networking
(0)
free with in-app purchases
6
KrakenSDR RDF
KrakenSDR RDF
KrakenSDR RDF
by KrakenRF Inc
Free
🔧 Utilities
(0)
7
niliBOX
niliBOX
niliBOX
by Juan Carlos Prieto
Free
🔧 Utilities
(0)
8
SDR-Control Mobile
SDR-Control Mobile
SDR-Control Mobile
Now available for your iPhone
$44.99

Control your Icom transceiver remotely or locally from your iPhone. Operate in all modes, log QSOs, and utilize integrated digital modes like FT8/FT4 and SSTV. No extra hardware is needed for global access.

Remote transceiver operationAll mode controlAuto logging logbook
🔧 Utilities
(61)
paid
9
rtl_tcp SDR
rtl_tcp SDR
rtl_tcp SDR
RTL-SDR Software Defined Radio
$12.99
$19.99 | 35% OFF

This app acts as a software-defined radio receiver for iOS devices, allowing you to listen to various radio signals and view RF spectrum data. It connects to external SDR peripherals via a network protocol, requiring a separate server setup.

Listen to AM, FM, SSB, CW signalsView RF spectrum and waterfallConnect to networked RTL-SDR peripherals
🔧 Utilities
(32)
paid
10
Rdio Scanner
Rdio Scanner
Rdio Scanner
by Groupe CHML Inc
Free

This is the native client for an open-source project that scans and identifies audio. It offers premium features through an annual subscription, which automatically renews unless canceled.

Native client applicationPremium featuresAnnual subscription
🔧 Utilities
(82)
subscription
11
Spectrum SDR (RTL-SDR)
Spectrum SDR (RTL-SDR)
Spectrum SDR (RTL-SDR)
Software Defined Radio
Free
🔧 Utilities
(0)
12
Ham Radio Exam - Tech
Ham Radio Exam - Tech
Ham Radio Exam - Tech
by Roy Watson
Free

Prepare for your Technician Class FCC Amateur Radio License exam. Review official question pools, take topic-specific quizzes, and simulate the actual exam. Track your progress and find local exam sessions.

Technician Class license exam preparationOfficial question pool reviewTopic-specific quizzes
🔧 Utilities
(233)
free
13
RepeaterBook
RepeaterBook
RepeaterBook
by Nicolas Associates Ltd
Free

Access a comprehensive, offline directory of amateur radio repeaters worldwide. Search by various criteria, view detailed information including distance and bearing, and easily submit updates. Optimized for both phones and tablets.

Offline repeater directoryWorldwide coverageComprehensive search options
🔍 Reference
(236)
free
14
SDR Radio
SDR Radio
SDR Radio
by Vladyslav Haliuk
$7.99
🔧 Utilities
(0)
15
SDR Receiver
SDR Receiver
SDR Receiver
Software Defined Radio
$9.99

This app demodulates and plays AM and FM radio signals received by compatible SDR hardware. It allows users to listen to various broadcasts, manage station lists, and adjust audio settings. Requires a separate radio and host computer for operation.

Demodulate AM and FM signalsManage station lists (import/export)Adjustable squelch and LNA gain
🔧 Utilities
(15)
paid
16
Barrett 4050 Remote Control
Barrett 4050 Remote Control
Barrett 4050 Remote Control
Remote control Barrett SDR
Free
📊 Productivity
(1)
17
iSDR
iSDR
iSDR
A Software Defined Radio App
$0.99

This app allows experimenters and amateur radio enthusiasts to build a portable software-defined radio receiver using their iOS device. It processes radio signals using the device's processor and offers various display and filtering modes. Additional hardware is required for live signal reception.

Six receive mode settings (USB, LSB, CW, AM, FM, Binaural)Selectable bandwidth settings120 dB dynamic range signal strength meter
📚 Education
(11)
paid
18
EchoLink
EchoLink
EchoLink
by Synergenics, LLC
Free

Connect to the EchoLink network using your iOS device. This application allows validated Amateur Radio operators to access the system from virtually anywhere. Registration with a valid Amateur Radio callsign is required.

Connect to EchoLink networkUse on iPhone, iPad, iPod touchValidated user access
🌟 Lifestyle
(17)
free
19
MagicSDR
MagicSDR
MagicSDR
Software-defined radio
$12.99

Explore the radio frequency spectrum with interactive visualizations like panadapters and waterfalls. Demodulate and listen to various radio signals, and collect frequencies. This flexible application supports numerous SDR hardware protocols and offers access to hundreds of global servers for listening without special equipment.

Panadapter and waterfall visualizationAM, SSB, CW, NFM, WFM demodulationFrequency collection
🔧 Utilities
(10)
free
20
Incar SDR
Incar SDR
Incar SDR
by Artem Sidorkin
Free

Control your Incar SDR combo device via Wi-Fi using your iPhone. Download software and camera databases, and stream video files directly to your device.

Wi-Fi device controlSoftware updatesCamera database downloads
📷 Photo & Video
(0)
free

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