Spectrum SDR (RTL-SDR)
Spectrum SDR (RTL-SDR) Summary
Spectrum SDR (RTL-SDR) is a free, ad-supported, with in-app purchases Android app in Communication by Knowle Consultants. Released in Mar 2025 (1 year ago). It has about 22K+ installs and 43 ratings with a 3.46★ (mixed) average. Based on AppGoblin estimates, it reaches roughly 1.6K monthly active users and generates around $<10K monthly revenue (62% IAP / 38% ads). Store last updated Aug 13, 2026
Recent activity: 105 installs this week (806 over 4 weeks) showing below average growth , and 1.00 new ratings this week View trends →
SDK intelligence: AppGoblin detected 5 development tools(e.g. Google), 1 ad networks, 1 mediation,and 1 analytics: product integrated into Spectrum SDR (RTL-SDR). View full SDK list →
Spectrum SDR (RTL-SDR) SDKs Summary
Spectrum SDR (RTL-SDR) was last scanned for SDKs on 2026-08-29. Below is the overview of third-party companies detected in the app. The full list of SDKs, permissions and unknowns is available here.
Google
Kotlin
JetBrains
AdMob
Firebase3.46★
Ratings: 43
Screenshots
App Description
Software Defined Radio using an RTL-SDR dongle or a remote instance of rtl_tcp.
This application is about having a bit of fun with those amazing little RTL-SDR dongles, whilst listening to AM/FM/SSB/CW 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.