Mini4WD Lap Timer

Mini4WD Lap Timer


(3 stars)


Download for Android Like

10,000 - 50,000 downloads

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View bigger - Mini4WD Lap Timer for Android screenshot
View bigger - Mini4WD Lap Timer for Android screenshot
View bigger - Mini4WD Lap Timer for Android screenshot
Keep track of Mini4WD and slot cars lap times using your phone camera.

Easy to use:
★ Place the phone alongside the track, with the red line on the camera preview facing on a track lane.
★ Press calibrate: the app will calibrate in a couple seconds.
★ Press start and put your Mini4WD in the track.
★ The app will record your lap times as the Mini4WD passes under the red line.

You can export the lap list as CSV (for import in Excel) or send it directly via email.

Can also be used with slot cars or for other purposes.

Please use the app in a well lit environment. The app uses differences in shadow to detect the passing car. Other moving things that cast shadows on the track will interfere with time recording. Good lighting also improves camera framerate so times will be more precise.


Internet permission required for ad banners. This app is ad-supported.

The app code is open source. You can get it on GitHub.

Mini4WD is a trademark of Tamiya, inc.
For more precise timing, please purchase the original Tamiya (#15184) Lap Timer.

Tags: mini 4wd lap timer, tamiya lap timer, mini4wd lap timer, mini4wd, lap timer tamiya, mini lap timer, best lap camera apps, mini 4wd laptimer, camera lap counter, tamiya race track timer.

Recently changed in this version

Japanese language added. (please email me for errors!)
Complete lap list on screen.
Export lap list as CSV.

Comments and ratings for Mini4WD Lap Timer
  • (48 stars)

    by Azmi Nizam on 28/02/2014

    Good application..

  • (48 stars)

    by Asharie Wahab on 29/12/2013

    Ease of use n great mirror to the original lap timer

  • (48 stars)

    by Remy Mohmad on 18/12/2013

    Very very good app...

  • (48 stars)

    by fazrin ramadhani on 02/12/2013

    Great app. But can be improved to make the stopwatch accurate to milisecond, 0.001 sec accuracy. Now only 0.1sec.

  • (48 stars)

    by David Glass on 08/09/2013

    I discovered this when looking for a way to do "qualifying" for our old HO slot cars. It works great, and I want to get the code to add a couple more features! Android rocks my Droid4.

  • (48 stars)

    by MOHD FARUZE Iberahim on 22/07/2013

    Nice App

  • (48 stars)

    by Daniel Berg on 31/12/2012

    Works great as a 1 lane lap timer on a 1/32 slot car track. Propped up my sg3 inside a roll of duct tape.. worked 98% of the time. Good enough to tune my cars with. Recommended!