NavimetriX

This app now ranks at the very top of the navigation software world. The usability is excellent, its availability across pretty much all O/S environments is unique and the (new) functionalities keep coming. Large selection of weather/currents/wave models and weather charts, for visualization to routing, a rich routing function (no-go/slow zones, polars library, etc.), AIS integration, weather stations, tides, and more. Of course, the development team has considerable sailing experience (it shows), but unlike some established players, the software itself is state-of-the-art in user interface (particularly on phones/tablets) and the team is super responsive. Great stuff.