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100,000 - 500,000 downloads

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RaceChrono™ lap timer app can be used for almost all types of motor and outdoor sport. RaceChrono has rich lap timer and analysis features especially designed for motor sports, making it a great alternative to traditional car, karting and motorcycle lap timers.

RaceChrono has following major features:
• Lap timer for circuit and point-to-point tracks (both standing start and flying start is supported)
• Gauges for viewing all live data
• Analysis mode with smooth scrolling configurable map and graphs
• Lap list with optimal lap time calculation
• Library of over 1000 pre-made racing circuits
• Exporting to VBO, CSV and NMEA formats
• Intuitive track editor for creating your own track maps
• Virtually unlimited amount of saved sessions
• Virtually unlimited session length
• Smooth graphics especially on devices that support hardware acceleration
• Bluetooth GPS support up-to 20hz (for superior accuracy over internal GPS)
• Internal GPS support

Available through in-app-purchases:
• Support for VBOX Sport, RaceDAC and OBD-II readers
• Predictive lap timing
• Time difference and time gain channels

Notice, devices with Android 2.2 will get an older version of the application with slightly fewer features

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Recently changed in this version

Change log for v3.20 beta 1:
- Added Portuguese (Portugal) language
- Added OBD-II channel setup to device settings
- Fixed: OBD-II multiple ECU support on some cars
- Fixed: Mixed up subject and text fields in sharing and exporting
- Fixed: Various minor lap timer issues
- Fixed: Multiple crashes and smaller issues

Comments and ratings for RaceChrono
  • (74 stars)

    by vasos1973 on 04/08/2012

    I tried it a few days ago at Athens Circuit (Megara) in Greece and I was very dissapointed as it didn't work at all. Afterthat I sticked with my previous gps lap timer that works perfect for my needs.

  • (74 stars)

    by Ivan Kalajdzic on 25/06/2014

    Love this app!

  • (74 stars)

    by Matty C on 24/06/2014

    I use it for motorcycle track days, and it works flawlessly every time. Great app!

  • (74 stars)

    by Ryan D on 24/06/2014

    Works perfect! Can't believe it's free.

  • (74 stars)

    by Rob Healy Jr. on 20/06/2014

    I cannot find anyway to change my data over to miles per hour. Other then that program works pretty well

  • (74 stars)

    by Sean Colvin on 24/05/2014

    Works well on a stock S3, can create custom tracks. Already has my home track, Blackhawk Farms!

  • (74 stars)

    by Ravichandran Manogaran on 23/05/2014

    Works really great for lap timing with GPS but doesn't connect with the obd device. I had the same issue with the other popular lap timer and that was solved with change of protocol settings . unfortunately this doesn't seem to have an option to change protocol manually. Its a shame because this seems like a good program which work good enough for 0$ unlike other expensive options