Ergo180

Ergo 180 is a geospatial calculator that allows the user to enter the aircraft current fuel consumption and ground speed to display range rings on an interactive map. This allows the pilot to accurately display the maximum fuel range in real time.
Ergo 180 also hosts a glide range option where the user can enter the known glide ratio for that aircraft and a distance ring around the aircraft will assist the pilot with improved situational awareness should a total loss of power occur.
Ergo 180 provides a worldwide airport database alongside a sectional maritime database that allows the user to consider all landing options along their route of flight whether it be by land or by sea.
Ergo 180 reduces the pilots workload, it is the ultimate in situational awareness and inter island flying for owner operators and should be a part of any overwater flight.

Disclaimer:
Continued use of GPS running in the background can dramatically decrease battery life.