Spectrum SDR (RTL-SDR)

1.22

Knowle Consultants

3.64

27 reviews

10,000+
Downloads

Free

Software Defined Radio using an RTL-SDR dongle or a remote instance of rtl_tcp.

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About Spectrum SDR (RTL-SDR)

Spectrum SDR (RTL-SDR) is a communication app developed by Knowle Consultants.

Download Statistics

Spectrum SDR (RTL-SDR) has been downloaded 18 thousand times. In the last 30 days, the app was downloaded 1.1 thousand times.

User Ratings

Spectrum SDR (RTL-SDR) is rated 3.64 out of 5 stars. The rating is based on 27 ratings.

App Information

Spectrum SDR (RTL-SDR) is FREE to download. The APK download size is 8.63 MB. The latest version available is 1.22. The last update was on June 17, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play March 2025.

Description

This application is about having a bit of fun with those amazing little RTL-SDR dongles, whilst listening to AM/FM/SSB radio signals. It's nice and easy to use so why not give it a try?

- Covers the full frequency range of your RTL-SDR dongle.
- AM and FM, wide and narrow, SSB, CW.
- FFT and Waterfall displays.
- Sample rates 240000 Hz to 2160000 Hz.
- Bias tee control.
- 75 presets over 5 pages.
- Gain controls.
- Squelch.
- Flexible display options, hide things you don't need to see.
- Built-in help.

There are two ways to use the application. The first is to use an RTL-SDR dongle and an SDR driver, available from Google Play. Selecting the Driver option in the application menu will open the driver page on Google Play. The second way is to connect to an instance of rtl_tcp running on a remote computer, most likely over WiFi. You will need a good network connection for this to work reliably so use of the driver is probably the preferred way to use the application in most cases.

We hope you enjoy using this application.

Recent changes:
Now has a CW demodulator to receive Morse code.

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More data about Spectrum SDR (RTL-SDR)

Price	Free to download
Total downloads	18 thousand
Recent downloads	1.1 thousand
Rating	3.64 based on 27 ratings
Ranking	Not ranked
Version	1.22
APK size	8.63 MB
Number of libraries	?
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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Alternative downloads for the Spectrum SDR (RTL-SDR) app

Spectrum SDR (RTL-SDR) compared with similar apps

Common keywords of similar apps

Remote Instance Ssb Cw Hz Google Sdr Rtl Application Driver Dongle Radio Fm Play

Keywords missing from this app

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Google Play Rating history and histogram

Downloads over time

Spectrum SDR (RTL-SDR) has been downloaded 18 thousand times. Over the past 30 days, it averaged 38 downloads per day.

Changelog of Spectrum SDR (RTL-SDR)

Show changelog

Developer information for Knowle Consultants

Knowle Consultants

knowleconsultants@gmail.com

Website

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Comments on Spectrum SDR (RTL-SDR) for Android

★★☆☆☆ steve c · Apr 13, 2026

Once started you can't stop it! Reply was just exit the app, but I can't do that!

Google Play Rankings for Spectrum SDR (RTL-SDR)

This app is not ranked

Technologies used by Spectrum SDR (RTL-SDR)

Spectrum SDR (RTL-SDR) is requesting 11 permissions and we don't have library information (yet).
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