RaceChrono

In-app purchases
4.61K reviews
Content rating
Everyone
500K+
Downloads
Content rating
Everyone
Digital Purchases
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About this app

RaceChrono is a versatile lap timer, data logging and data analysis app designed especially for use in motorsports, replacing your traditional lap timers and data loggers.

RaceChrono apps have a strong following, currently over 100000 active users. If you look around at pits during your race or track day, chances are that you’ll see someone using RaceChrono. Even many professionals, such as factory test drivers and race driving instructors, are known to use this app! No matter whether you ride motorbikes, drive go-karts or cars, on closed circuit or special stage tracks – this is the motorsports app for you.

RaceChrono has following major features:
• Lap timing with sectors and optimal lap
• Track library of over 2600 pre-made race tracks
• Custom user defined circuit and point-to-point tracks
• Smoothly scrolling data analysis with synchronised graph and map
• Unlimited session length, good for 24 hour races

RaceChrono has following major features available via in-app-purchases:
• Smoothly scrolling data analysis with synchronised graph, X/Y graph, map, video and comparison video
• Predictive lap timing and time delta graph
• Hardware accelerated video export with configurable data overlay
• Multiple camera recording and picture-in-picture video export
• Video recording using internal camera
• Linking and synchronising video files from almost all action cameras
• Support for external GPS receivers; Dragy Pro/DRG70/DRG70-C/Lite, RaceBox Mini/Mini S/Micro, Qstarz BL-818GT/BL-1000GT/LT-8000GT, Columbus P-9 Race, Dual XGPS 150/160, VBOX Sport, Garmin GLO
• Support for OBD-II readers; both Bluetooth and Wi-Fi
• Support for Bluetooth LE heart rate monitors
• Session data export in .ODS (session summary for Excel), .NMEA, .VBO and .CSV formats
RaceChrono - The app for Motorsports
Updated on
Nov 9, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, App activity and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

4.44K reviews
A Google user
September 22, 2018
Awesome app! Used this for the first time at Lime Rock Park in CT on 18-Sep-2018. Super easy to use - just press the big Start button, it prompts you for the track and then it selected Lime Rock by itself since I was there. And that's it. After each track session you stop it, and review the results. Lap times, min/avg/max mph, etc. Confirmed the times against GoPro video and it's spot on. Love it!
42 people found this review helpful
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Theo Kalkandis
March 19, 2026
Edited March 2026. I bought a later model BL-818GT and the app works perfectly with this. I'll get the full subscription now, thanks heaps for your support. Don't know what happened but no longer works correctly on Samsung S10+. Using external Qstarz GPS, most times will not find start/finish line so complete session is all of 7 laps measured till manually stopped. Same on Samsung Note 5. Last 3 races did not start at all. Edit: Thanks for the reply. I'll get another external GPS to test.
12 people found this review helpful
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RaceChrono
February 3, 2020
I don't think anything happened to RaceChrono. I think your GPS receiver is malfunctioning, and you might need a new one. Due to various problems with the older Qstarz BT-Q818 series, they are not recommended device, so please refer FAQ for recommended external GPS devices. Also please contact RaceChrono support if you have any questions.
Schalat L
December 7, 2022
Purchased the pro version in the app and used this on Chang international circuit in Thailand. Never have a single problem. The app is very easy to use, navigate and has very easy to understand UI and functions. Connect with obdII and use gopro11 to record then sync the footage with metadata was easy as pie. The footage can be exported in laps, sessions, timeframe with a very easy to use navigation timeline. Will recommend this to everyone I know!
7 people found this review helpful
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What’s new

- Added bar gauge for video overlay and live screen
- Added support for Dexian D1 and DigSpice IV GPS receivers
- Added setting for adjusting timer pause duration
- Distinguishable analysis trace colors for color blind people
- Hints are displayed only once when adjusting video sync with +/- buttons
- Added native Android 17 support
- Many fixes