Choose if you want to use the maximum GPS mode for better accuracy.
The app employs the best method for managing the battery.
The app only can be activated with a minimum of GPS signal for more than 20 seconds.
The screen shows where you set the anchor, and where is the boat.
The app works in background, so while it is active you can lock or use other apps.
Be careful if your iPhone is in silent mode. The app uses the iPhone's GPS if you are navigating on a ship of great length, consequently the app understands that your boat is dragging. The app is conceived and designed for smaller boats without electronic systems.