Speedometer+: • places a highly accurate speedometer in the palm of your hand • dedicated faces for mph, km/h, knots • displays current speed with both an analog and digital readout • records your maximum speed for a session • ability to lock your maximum speed so it's not overwritten by a new maximum speed • ability to share your maximum speed with friends • ability to reset your maximum speed in order to record a new session • high level of contrast in order to easily see in the daylight • clear GPS accuracy indicator • trip meter to measure distance you have traveled • toggle a setting to keep measuring max speed & trip while you're using other apps • digital readout records up to 999 mph, 999 km/h, 99.9 knots ========== Great for the following: • driving • on a train • sailing/boating • motorcycle rides • plane rides • anything where you want to measure speed ========== Best results: The accuracy of this speedometer is subject to the accuracy of the GPS on your iPhone. Our GPS accuracy indicator helps you quickly see when you're getting a good signal when the green light is on. The following general rules will help you quickly get a good GPS signal: • keep the unit in the line of sight of the sky • try to stay close to the same position for a few moments while the device gets a GPS lock • even with a good GPS signal reading, the unit may take a little bit of time on startup to get a GPS lock on especially when you are moving fast Note: Continued use of GPS running in the background can dramatically decrease battery life.