Pitufino sends GPS, AIS and instrument data from your boat's nav devices to your favourite chart-plotter apps, and...
...comes with sophisticated apps that run in your browser (these don't even need to be installed).
The Sailing Instruments app includes an auto-pilot controller and shows all data relevant for sailiing, including waypoint data, laylines, AIS targets, long-term averages and logbook (here in night colors).