When it comes to payware, perhaps the following would be great add-on.
Aerovie is a full electronic flight bag (EFB) for iPad, iPhone, and Apple Watch. It includes charts, flight plan filing, and powerful pre-flight weather. You can also submit PIREP to Lockheed Martin Flight Service into National Airspace System. Learn more and get a free trial at aerovie.com.
But what with freeware since we love this ……
The Republic SeaBee RC3 is a small amphibian plane with incredible detail designed by Denis Krupin (Ddenn Design). It includes dynamic reflections, a carefully modeled 3D model and cockpit, and various animations.