The TPA Performance Suite is a collection of applications that utilizes the iPhone hardware (accelerometer and GPS) to measure and record the performance of your car, airplane or train. All neatly packaged in one application. These are some of the things you can do with the TPA Performance Suite:

• Measure the power consumption, combined air and friction resistance of the train you are travelling on.
• Record and replay the travelling path of your flight.
• Watch your direction with the movement based software compass, handy if you don't have the built-in compass.
• Measure your cars performance.
  (60 feet, 1/2 quarter mile, quarter mile, 0-60mph, 0-100km/h and horsepower)