Lap Legend

Dauntless Devices LLC

In-app purchases

About this app

Pro-Level Data. No PhD Required.

Use your phone or tablet to record laps, autocross runs, 1/4 mile passes, and more!

• Fast, Easy Setup - Get on Track in Seconds
• Superior Data Acquisition + Deep OBD Data
• GPS Lap Timing with Predictive & Target Times
• Integrated Video+Data Recording and Export
• Replay Data & Video of your Theoretical Best Lap
• Advanced Analysis Tools Designed to Find You Time
• Automatic & Manual Points of Interest (POI) Marking
• Supports Road Course, Circle Track, Autocross, Rally, Drift, and Drag Racing
• 2000+ Included Track Configurations
• Custom Track Creation & Sharing
• Integrated Weather Data & Density Altitude Calculations
• Add Your Own Session Notes

Lap Legend is fueled by a passion for motorsports, with the goal of giving all track drivers access to high-performance data acquisition, driving analysis, lap timing, and video. Enjoy!


This app is intended only for sanctioned motorsports and track events. Always drive safely. Use at your own risk.

Any telemetry or messaging features are not guaranteed, and must not be relied upon for critical or safety uses.

Please see website or in-app information for details on compatible external hardware.

Ratings and reviews

Works great!! Used with my HAZE GPS and got a ton of data

Needs voice lap times to make it perfect as it's not always easy to look down to see the time.

Great app easy to use very straightforward approach to help a driver find lower lap times

What’s new

- User Interface and graphics refinements
- Camera Infinity Focus (on supported devices)
- Statistics and POI for Trans Fluid Temp
- Speed hack option for Classic BT GPS devices
- Fixed video brake overlay when there's invalid channel data
- Boost calculation fixes and improvements
- Fixed rare crash when closing certain files
- Fixed duplicate data channels in TBL data
- Improved DauntlessOBD CAN decoder detection
- Android platform updates
- Low-level camera API updates
- Track database update