DigSpice Circuit Timer is a free lifestyle app developed by TADAYOSHI SATO for iPhone users. This app allows you to measure and track your lap times on various circuits using your device's GPS.

Once you turn it on, the app automatically detects the circuit based on GPS location information and starts timing your laps. Each time you pass the control line, the app displays your lap time for 12 seconds. It also shows the difference between your lap time and the best lap time. You can view a list of all the lap times you have measured.

Additionally, you have the option to set a target time. In this case, the app displays the difference between your lap time and the target time. To test the app's functionality, simply turn it on and long tap the gray display frame in the middle. This allows you to simulate passing the control line.

The app supports a wide range of circuits, including A ONE Circuit, Akira Hilltop Circuit, Circuit Akigase, Autoland Sakute, Autoland Gotenba, Apple Formula Land, and many more.

DigSpice Circuit Timer is a convenient tool for motorsport enthusiasts who want to accurately measure and analyze their lap times. Whether you're a professional racer or a hobbyist, this app can help you improve your performance on the track.