The ROUSH LapTimer application, co-developed with the creator of Harry's LapTimer, let’s you push your vehicle to the limit while recording everything for later playback and evaluation.

This high-precision tool will improve your driving ability by letting you see where you can go faster on any track. ROUSH’s LapTimer generates beautiful in-car video recordings with an overlay of vehicle data, ready to be presented on YouTube or other social media sites.

Even without video, recorded data from your track day can be analyzed using pre-set views, making it easy to analyze and improve your driving performance. In case heart rates were recorded using Heath Kit, this data can be overlaid to recordings too.

Using the ROUSH lap timer, you can change vehicle settings and accurately measure performance impact on your track times.

What’s New

Version 24.0

This is our next major release. It is free for all existing users!
- Reworked all logging format importers (VBO, GPX, NMEA), added support for as-is imports (VBO, NMEA)
- Refactor all dialogs, fixed dead locks
- Fixed VEEPEAK OBD adapter recognition
- Fixed a bug in track set conflict resolving
- Modernized launch screen for late iOS versions
- Modernized media handling and access to videos in particular
- Modernized various user interface areas for late iOS versions
- Renamed Camera Roll to Photos
- Changed OBD gauges in video overlays to appear if any lap has OBD, not only if all have it
- Added a health check for disconnected external sensors
- Allow manual track selection in Status if either Manual Timing is enabled or Performance View is selected
- Fast speed range selection for Performance View
- Fixed delta display of temperatures when using Fahrenheit
- Fixed a crash when returning from Video Preview
- Added sector and lap time display to video overlays again
- Added setting for HERO8
- Added support for the airVentDisplay (BMW e46 m3 GNSS and engine adapter)
- Added track subtype for Water (for Jetski, motorboat, sailing competition)
- Fixed crash when restoring a database
- Updated traditional Chinese translation
- Added build number to system information
- Massive refactoring in several areas

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

铣哥 ,

Too many bugs!!!!

Can't open the video!!!!!!!!


Harald Schlangmann
80.1 MB

Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, German, Italian, Japanese, Simplified Chinese, Spanish, Traditional Chinese

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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