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    Turn your mobile device into an RC airplane speedometer!


    Listen and fly! RC Speedo will announce RC airplane speeds after each pass.

    Easy to use speed logging and email export! Create custom logs to store your speeds for future review.

    Share your speeds! Instantly post your top speeds to your favorite social networks.

    RC Speedo is a speedometer app for EDF's, pylon racers, pushers, and other hi-speed electric radio-controlled airplanes. The application performs doppler analysis on the sound of an RC airplane passing in front of the mobile device’s microphone. This method of finding an RC aircraft's speed was pioneered by RC enthusiasts to accurately calculate the speed of a radio-controlled airplane using a clean sound clip of the airplane making a speed run past the pilot.

    With RC Speedo the process is greatly simplified: just bring your phone to the field and hit "listen". As you make passes with your favorite airplane, the app will report your speeds back to you in real time!

    The Android RC Speedo app runs on any Android device running version 1.6 (Donut) or higher. RC Speedo requires the device to have a built in microphone in order to operate.

    The RC Speedo app works best with electric RC aircraft that have high RPM, high blade count propulsion systems. This includes EDFs, pylon racers, pusher jets, and similar airplanes. RC Speedo currently will NOT work on planes that are extremely quiet, operate at low RPM's, turbines, most nitro planes, and planes with no propulsion system. It also cannot detect aircraft traveling slower than 25 MPH. RC Speedo will NOT work with helicopters.

    RC Speedo is not guaranteed to “hear” every pass. Ensure that the settings are correct for your aircraft and try to make straight and smooth passes. Please consult the manual page at for more information on settings and features. The makers of this app are not responsible for any damage caused to your phone, plane, or self while using this app. Fly safe!

    To view a manual for the app and see videos of it in action, please visit:

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    Users review

    from 87 reviews



    Users comments for RCSpeedo

    Kai R

    by Kai R

    Apr 25, 2016  |  "Poor"

    ...but after trying this on my HTC One M9 and Galaxy S6, all I ever get is 0.0mph. Refunded. Shame.

    Christoffer Jonsson

    by Christoffer Jonsson

    Jul 19, 2013  |  "Awesome"

    Tested against a Flite Test Youtube video where rc plane speeds are measured with a radar gun. Difference to that radar gun is +/-0-5mph. There is also variation for the same pass of a couple mph. Which doesn't make it an exact app but a very fun tool to see approximate speed.

    Paul Rebres

    by Paul Rebres

    Jul 18, 2013  |  "Great"

    Works best with electric planes, does work with Nitro, gas, and edf's. Have had no luck with turbines.

    N dev

    by N dev

    Jul 09, 2013  |  "Awesome"

    Great little app works well with Galaxy S2

    Nikolei Zinsli

    by Nikolei Zinsli

    Jun 14, 2013  |  "Awesome"


    Robert M

    by Robert M

    Jan 12, 2013  |  "OK"

    Works on recordings..but not in the field..tried all modes..many passes..different planes