Lap Legend

Dauntless Devices LLC

In-app purchases

About this app

Use your phone or tablet to record race track laps, autocross runs, 1/4 mile passes, and more! Provides live timing, data and video acquisition, and advanced data analysis.

• Easy to Setup and Start Driving
• Superior Data Acquisition & Analysis
• GPS Lap Timing with Predictive and Target Times
• Video Capture in Single or Dual Camera Mode
• Acquire High-Performance Vehicle Data via OBD
• Advanced Data Analysis Tools to Find You More Time on Track
• Video & Data Replay of Your Theoretical Best Lap
• 2000+ Included Track Configurations
• Create and Share Your Own Custom Tracks
• Road Course, Circle Track, Autocross, Rally, Drift, and Drag Racing
• Weather Data with Density Altitude and Correction Factor Calculations


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 well at various tracks, GPS is accurate

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

- Option to share session graphic or video clip directly to gallery
- Even faster sampling of vehicle sensors
- Calculated Boost improvements
- Ability to import VBO file format
- Logs Satellite count when using an External GPS
- Fixed potential crash on very old versions of Android