RaceChrono

In-app purchases
4.4
4.53K reviews
500K+
Downloads
Content rating
Everyone
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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
Updated on
Feb 20, 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

4.4
4.36K reviews
Victor Mercieca
February 1, 2024
GPS device was found on the 3rd try - As soon as it connects to your RaceBox Mini S you will be told you have 5 minute trial and need to upgrade to record more. Since the RaceBox Mini S has terrible software that crashes all the time I was hoping to test this out and see if it worked better then the free software that came with the device since they have this software as a supported label on the RaceBox website I thought it would be more of partnership between the companies - I was wrong.
6 people found this review helpful
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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!
41 people found this review helpful
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A Google user
February 3, 2020
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. Had to go back to manual timing. Note it worked a few months ago, then there was a couple of updates and no longer works. 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.

What’s new

- Added portrait video recording and export
- Added ability to place images on video overlays
- Added predicted lap time channel and gauge
- Added arrow instead of dot in map gauge
- Added support for Dragy OBD, Dragy Lite and SatellCom K2/K2S
- Added video recording frame rate setting, the default is 60 FPS
- Added video export codec setting h.264/h.265
- Added new channels for electric cars
- Added prefer IMU data setting for RaceBox Mini
- Added viewable change log