RF Analyzer

RF Analyzer

In-app purchases

About this app

RF Analyzer turns your Android device into a real-time spectrum analyzer for Software Defined Radio (SDR). Visualize and listen to radio signals around you - from amateur radio to broadcast signals and beyond.

Whether you're a curious beginner or a seasoned ham, RF Analyzer offers a hands-on, interactive way to explore radio signals.

FEATURES

- Works with HackRF, RTL-SDR, Airspy, HydraSDR or pre-recorded IQ files
- View live spectrum (FFT) and waterfall plots
- Demodulate AM, FM, SSB, and CW signals
- Record raw IQ samples for offline analysis
- A responsive and modern Material Design interface
- Scroll, zoom, and tune through the bands
- Built-in context-aware help and a full offline in-app manual

PRICING

You can try all features for free with a 7-day trial and up to 60 minutes of analyzer usage.

If you like it, a one-time in-app purchase unlocks the full version - no subscriptions, no accounts, no ads.

This app is a hobby project, built with passion and countless hours of work. Supporting the app helps me continue developing and improving it. Thank you! 🙏

REQUIREMENTS

- Android phone or tablet (with USB OTG support)
- Supported SDR hardware (HackRF, RTL-SDR, Airspy or HydraSDR)
- Note: The RTL-SDR Blog v4 is fully supported.
- USB OTG adapter (USB-A female to USB-C for modern phones)
- This is not necessary for SDRs with USB-C connector (e.g. the HydraSDR)

LEARN MORE

Want to go deeper? The full user manual is available with signal identification tips, ham radio basics, and more: https://demantz.github.io/RFAnalyzer/

Have fun exploring, learning, and listening to radio signals :)

73!
- Dennis (DM4NTZ), Heidelberg, Germany


LICENSE

This application is released under the GNU General Public License v2. It is free software and the source code is available on GitHub.

LEGAL ISSUES

Please note that I am not responsible for any legal issues caused by the usage of this application. Be responsible and comply with your local law!

Ratings and reviews

Was disappointed of the switch to a paid app. Spent a few days thinking about it and concluded I'm just going to pay for it since it's a one time and it's still the best option for android. Perfect for portable use.

Really nice app, however channel memory, step programming (6.25, 12.5 kHz etc.) and scan of banks as well as search from frequency to frequency would be very helpful.

Please add channel list creator via an auto scan feature, also add mp3 recording. For 5 stars add an overlay for band identification like in sdr++ (along with tips on how to decide the signal that is found)

What’s new

RF Analyzer Version 2.1
- Support for Airspy SDR
- Support for HydraSDR RFOne SDR
- Added Rational Resampler: Demodulation of arbitrary sample rates is now possible
- Switched audio output sample rate from 31250 Hz to 48000 Hz
- Automatically disable any Frequency restrictions when RTL-SDR Blog v4 is connected
- Multiple Bug fixes for app crashes and freezes