My wife has given me a cellular iPad. Until now we had no smart phones or tablets, just computers with WIFI so I have a lot to learn. I know that a lot of you have been using iPads on your boat and am looking for suggestions. What apps do you use and like? So far I have Garmin BlueChart so I can see Active Captain data. The boat has a chart plotter in the cockpit so I don't think I need any navigation apps. What else should I be considering? Thanks.