(5 stars)


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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
• 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 20 Hz (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
• Exporting to VBO, CSV and NMEA formats

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 v3.37:
- Fixed live lap timer not working when an existing session is resumed

Change log for v3.36:
- Added Italian translation
- Fixed traps were sometimes (rarely) not trigged when crossed
- Fixed not recording data for other devices if GPS was set to other than Device #1
- Fixed initial map zoom on Android 5.0 (maps v2)
- Fixed map zooming was impossible when recording a session or playing back video on Android 5.0 and Maps v2

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 Jaime Conde Rojas on 23/02/2015

    I like everything, but I don't know if there is anything hidden to add laps to previous sessions. Even on saved tracks, the app doesn't record laps and lap times for previous sessions. Yes, I mean after resume session. It adds time as a new session, but doesn't count as new laps. If that's a normal performance, it's ok, I can start new sessions with new tracks.

  • (74 stars)

    by Dave Borgy on 17/02/2015

    Great app for me a novice endro rider

  • (74 stars)

    by Impact Blue on 11/02/2015

    This app helped me win several time attack events. A must have for any time attack enthusiasts. Also it helps improve lap times by having the "optimum time" so that you know where to focus your improvements on the track. It is so awesome! Will definitely purchase the pro version once I get an OBD reader.

  • (74 stars)

    by Rafael Isento on 08/02/2015

    ... for track day events and similars. Even the free app works like a must. Get the paid version and you won't regret.

  • (74 stars)

    by Rick Loughman on 08/02/2015

    a truly remarkable app. does *exactly* what it says on the tin. rare bugs are always fixed by great support. needs 2 things to be flawless: i use internal accels and gps and every now and again, unless i disable screen rotation - i sometimes drive sideways at 100mph (haha) and a direct export to googleearth flyby to let friends 'see' my lines from a driver's-eye view. these are minor niggles and d

  • (74 stars)

    by Hwang WK on 26/01/2015

    Just wonder how am I going to export my tracks to GPX file format??

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