My old original I-phone contract is up and it is time to get new equipment. Just starting the research phase but would like input on I-phone vs. Android vs. Windows for any sailing related apps. I have not used my existing phone for any navigation other than tides and some weather but might want to use a charting system for backup. My computer for work is Windows 7 and I run Coastal Explorer on it and a Raymarine chartplotter on the boat.