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Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

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Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

RaceChrono Pro Screenshots

iPad

iPhone

About RaceChrono Pro

RaceChrono Pro 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. The RaceChrono Pro app also enables you to record videos and overlay them with the logged data.

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 Pro 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, 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; RaceBox Mini/Mini S, Qstarz BL-818GT/BL-1000GT/LT-8000GT, Columbus P-9 Race, Dual XGPS 150/160, VBOX Sport, Garmin GLO
• Support for OBD-II readers; OBDLink MX+ Bluetooth, OBDLink CX Bluetooth, Vgate vLinker FS, Vgate vLinker/iCar BLE, PLX Kiwi 3/4, Carista OBD2 Bluetooth, Tonwon BLE 1/2/Pro, Veepeak OBDCheck BLE, UniCarScan UCSI-2000, OBDLink MX Wi-Fi, generic Wi-Fi OBD-II
• Support for Bluetooth LE heart rate monitors
• Unlimited session length, good for 24 hour races
• Session data export in .ODS (session summary for Excel), .NMEA, .VBO and .CSV formats

What's New in the Latest Version 8.0.9

Last updated on Oct 26, 2023

Old Versions

- Fixed: Disappearing buttons for video sync adjustment

Version History

8.0.9

Oct 26, 2023

- Fixed: Disappearing buttons for video sync adjustment

8.0.8

Jul 18, 2023

- Urgent fix: A lot of noise in the Live screen’s time delta and speed delta, especially on longer circuits (since v8.0.0)
- Fixed: Time delta selection problem in Analysis screen

8.0.7

Jul 8, 2023

- Completed German and French translations
- Changed: The selected video overlay is now the same for Analysis and Overlaid video export
- Fixed: Wrong overlay aspect ratio for non-16:9 video frames when exporting video
- Fixed: A couple of upgrade issues

8.0.5

Jul 6, 2023

- Changed: Default Location API mode set to "Best”. This can be changed in Expert settings.
- Fixed: Allow selecting GPS time for digital displays
- Fixed: Time delta defaults again to two decimals
- Fixed: Digital gauge value font scaling
- Fixed: Disappearing seek bar

8.0.3

Jun 28, 2023

- Real lateral acceleration, longitudinal acceleration and lean angle channels calculated from IMU data. Supported IMUs are the phone’s internal sensors, as well as RaceBox Mini / Mini S. When using the internal sensors, the phone needs to be on a holder for the whole duration of the session.
- New video overlay editor with much more configurability.
- Renewed analysis screen with X/Y graph

7.6.6

Dec 16, 2022

- Fixed: Tyre temperature gauge glitch when used with Alsense sensors
- Fixed: Memory leak in analysis Analysis screen

7.6.4

Nov 2, 2022

- Added: Remote control support for GoPro HERO 11
- Added: Official support for Alsense ALS Tire BLE tire temperature sensor
- Fixed: Allow multi-line comments in AIM .CSV imports
- Fixed: Broken lap timing metadata in .VBO exports
- Fixed: Export queue reported erroneous “No data to export” when exporting items from multiple sessions or when the queue was opened from the main screen

7.6.3

Sep 7, 2022

- Fixed: Crash when importing GoPro sensor data from more than one video file at once

7.6.2

Aug 26, 2022

- Fixed: GoPro sensor data could not be imported when selecting file from the Photos app (since v7.6.1)
- Fixed: Video files were not always downloaded with full resolution from the iCloud Photos

7.6.1

Aug 22, 2022

- Fixed: GoPro remote control feature works properly again on GoPro 9 and 10, and video file downloads are faster and more reliable
- Fixed: Too low remaining storage space reported by the video preview screen
- Added: Possibility to add narrower traps (10 and 15 meters)
- Added: Photos app picker is now used in Import screen for iOS 14 and later
- Added: Feature to delete ‘My RaceChrono’ account from the app
- Added: Wheel Turtle temperature sensors now officially supported

7.5.3

Jun 20, 2022

- Fixed: RaceBox mini accuracy channel magnitude
- Fixed: Possible crash when opening a session
- Fixed: Missing translations

7.5.2

Apr 7, 2022

- Added: Convenience button for registering an account
- Added: Configurable video fade in and out for video export
- Added: Better names for exported files
- Removed: Non-functional video quality setting
- Fixed: Crash when trying to pick files from Photos app for importing

7.5.1

Mar 4, 2022

- Added support for RaceBox Mini
- Added custom channels imported from .VBO files
- Improved Import screen
- Various fixes and other improvements

7.4.4

Dec 17, 2021

- Fixed: Broken text editors

7.4.3

Nov 19, 2021

- Improved: Connections now recover when Bluetooth is turned off and on again
- Fixed: Time delta shows zero after new best lap (since v7.4.1)
- Fixed: GoPro import may link the video file to a wrong time
- Fixed: GoPro import problem with accelerometer and gyroscope data
- Fixed: Zombie files may be left behind after importing
- Fixed: Missing video file selection in Analysis screen

7.4.1

Nov 5, 2021

- Added Bluetooth LE Monitor API for the RaceChrono DIY device
- Fixed: Issues with standing starts
- Fixed: Issues with reference laps
- Fixed: Problem with multi-frame OBD-II responses
- Fixed: Many other bugs

7.3.0

Jul 12, 2021

- Added new CSV v3 export format with more elaborate column headers
- Added export for Z1 Analyzer
- Added battery level indicator for multiple different type of sensors
- Added accelerometer and gyroscope data for GoPro sensor data import
- Improved: VBO export column names
- Improved: Nicer format for the solution in the Custom Channel Editor
- Fixed: Inverted accelerometer readings to match other platforms
- Fixed: Many bugs

7.2.7

May 20, 2021

- Fixed: Crash when resolving device delay
- Fixed: The last "in lap" was not displayed in the lap list
- Fixed: Incomplete laps displayed as 0:00.00 in Analysis screen drop downs
- Fixed: Missing rounding in live lap timer

7.2.6

Apr 24, 2021

- Fixed: Videos from Tesla Track Mode exported in invalid resolution

7.2.5

Apr 22, 2021

- Fixed: OBD-II connection initialisation failed sometimes
- Fixed: Export failed if source video files did not have audio (such as Tesla Track Mode video files)

7.2.4

Apr 10, 2021

- Fixed: Many bugs

7.2.3

Mar 26, 2021

- Added support for OBDLink CX
- Added importing for Tesla Track Mode (.csv), iRacing telemetry (.ibt), and AIM Data Logger files (.csv)
- Added 5 Hz support for Transystem GL-770
- Added many new custom channel names
- Improved: OBD-II custom channel PIDs (requests) are now allowed up-to 8 bytes in length

7.1.0

Feb 8, 2021

- Added remote control support for GoPro 9
- Added support for Bluetooth Smart LNS -standard
- Added analysis adjustment for GPS position shift
- Added analysis adjustment for device delay
- Added “OBD-II response prefix” field to channel editor
- Added support for lean angle in importing .VBO files
- Improved Vehicle profile’s test connection and live data

7.0.9

Sep 28, 2020

- Fixed: Another Audio/Video codec failure when exporting a session with more than two source video files
- Fixed: Speed delta channel was not selectable for analysis

7.0.8

Sep 23, 2020

- Fixed: Audio/Video codec failure when exporting a session with more than two source video files
- Fixed: Playback was muted in "Silent mode"

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