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RF Analyzer (FOSS)

Analyze RF signals on Android with HackRF, RTL-SDR, Airspy and HydraSDR.
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, Airspy HF, 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
- Bookmarks for Stations and Bands
- Import from SDR# or SDR++
- Automatically synchronize with online lists (EiBi DB, POTA & SOTA Spots)

REQUIREMENTS

- Android phone or tablet (with USB OTG support)
- Supported SDR hardware (HackRF, RTL-SDR, Airspy (HF+) or HydraSDR)
Note: The RTL-SDR Blog v4 is fully supported.
- USB OTG adapter (USB-A female to USB-C for modern phones)
Note: 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 online with signal
identification tips, ham radio basics, and more:
https://demantz.github.io/RFAnalyzer/

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

SUPPORT

This app is open-source so anyone can explore SDR without barriers and let
the community benefit from a Google-free, privacy-respecting version. If you
enjoy using it, please support the project - your donation helps keeping it
alive and accessible to everyone.

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!

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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 2.2-foss (20205) suggested Added on Mar 18, 2026

    arm64-v8a armeabi-v7a riscv64 x86 x86_64

    This version requires Android 9.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "dataSync"
      Allows the app to make use of foreground services with the type "dataSync"
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • com.mantz_it.rfanalyzer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 18 MiB PGP Signature | Build Log

  • Version 2.1.1-foss (20107) - Added on Oct 25, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 9.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • com.mantz_it.rfanalyzer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 12 MiB PGP Signature | Build Log

  • Version 2.0.2 (20014) - Added on Sep 20, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 9.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "mediaPlayback"
      Allows the app to make use of foreground services with the type "mediaPlayback"
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • com.mantz_it.rfanalyzer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 9 MiB PGP Signature | Build Log

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