Drag Racer is a mobile application that allows users to measure their vehicle's acceleration, top speed, and 0-60 time. The app provides a graph of the acceleration, which can be analyzed to improve driving skills. The star rating system allows users to know how accurate their race was. The app also has a "Head-up display" mode, which can be used by night racers to observe the reflection of the device under the windshield. The app saves the race, which can be loaded anytime.<br/><br/>To use Drag Racer, users need to ensure that their phone's GPS location is on, and the app is allowed to use it. The phone should be placed under the windshield, and users should wait until there's a green "0 mph or kph" on the screen before starting the race. The app should only be used on closed roads or race tracks, and users should not break any traffic rules or operate the application while driving. Users can rate the app to disable ads.<br/><br/>It is important to note that slow runs below 25mph are ignored, and accuracy is more important than the best score. The measurement accuracy of the app strongly relies on the user's GPS device. Users are encouraged to provide feedback on the accuracy of the app with their device. <br/><br/>In conclusion, Drag Racer is a useful mobile application for measuring a vehicle's acceleration, top speed, and 0-60 time. The app provides a graph of the acceleration, a star rating system, and a "Head-up display" mode. Users should follow safety rules and provide feedback on the accuracy of the app with their device.