Turn your mobile device into an RC airplane speedometer! Fun and easy to use.


Listen and fly! RCSpeedo 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.

RCSpeedo 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 RCSpeedo 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 iOS RCSpeedo app runs on iPhone 3 and above, iPod Touch Gen 4 and above, and all iPad devices. RCSpeedo requires the device to have a built in microphone in order to operate.

RCSpeedo works best with electric RC aircraft that have high RPM propulsion systems. This includes EDFs, pylon racers, pusher jets, and similar airplanes. RCSpeedo 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.

RCSpeedo 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:

What’s New

Version 1.8.6

Updated permissions to fix microphone listening bug. This should prevent crashes on startup. We apologize for any inconvenience this may have caused and appreciate your continued support.

Ratings and Reviews

GrooveHobbit ,

“Start Listening” crashes app

Agreed with previous poster, crashes as soon as I press the start listening button.

2fat4you2009 ,


Crashes as soon as I press “listening” button

Ripped off doesnt work ,

Works most of the time

Works better with louder planes. Sometimes it will miss a pass. Put it on top of your car and listen to it call out your high speed passes. Not always accurate. May sound like I don't like it but actually I love it. So fun trying to break your buddies speed, or your own.


Vesmar Entertainment LLC
12.7 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Portuguese, Spanish
Age Rating
Rated 4+
© 2011 Vesmar Entertainment LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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