RaceChrono

RaceChrono

In-app purchases

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

Ratings and reviews

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.

Installed app, crashes instantly won't open. Very disappointed based on the good reviews from around the internet

This apps is not recording any data when i minimise it with my Honor X9D. How to solve it?

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