IPhone 6s Plus scaling error

The graphics showing coastlines and the map overlay still dont line up despite reporting this to the App developer some months ago. Its fine on my iPad but difficult to use on my iPhone. I had hoped to ditch the iPad in favor of a more compact way of using this app. Alas, no.

The App also shuts down sometimes and fails to open properly, omitting the wind overlay.

Why not 1 star? Despite the above faults its still useful.

Mblstr about SailFlow: Marine Forecasts