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 within the 60 minutes test period (only actual analyzer usage counts - so enough time to test out all features with all your devices).

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

I don't usually buy apps for android, but this one is awesome and worth it. One thing I found out after further testing is that I cant enable the bias-T on my rtl-sdr V4. Oh, never mind that, you need to stop the dongle before turning it on.

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.

What’s new

RF Analyzer Version 2.1
- Version 2.1.1 fixes AM demodulation bug (was not working) and crashes
- 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