If you're looking for a GPS-based performance meter that can help you track your car's performance, Dragy is the perfect app for you. Developed by dragy, this app is available for free on Android and can help you track your 0-60mph, 60-130mph, 0-130mph, 1/4 mile, and 1/2 mile performance.

The app requires a Dragy device for performance testing, which can be purchased from their website. Once you have the device, you can easily connect it to your phone and start tracking your car's performance. You can even share your performance results with other users on the leaderboard and share videos with real-time speedometer and performance reports.

Overall, Dragy is a useful app for car enthusiasts who want to track their car's performance and compete with other users on the leaderboard.