Hey Whit,
All of my are free so far but I keep looking for new ones.
Solar and moon calculator, Moon phase, Tideapp, Marine weather by Bluefin, WeatherBug, MarineTraffic, EarthNC Marine,
Also carry for connecting with land when I have needs:
Maps, Point inside, Compass, Bubble, Foodfinder, Google Sky Map, GPS2Google, Marine compass, Marine Debris tracker, Places, Time2Fish, US Army Survival Guide
these are from Market place via Verizon
I will take a look at yours. Thanks for the info
Captwaypoint