re: What is the best offshore app for your phone?

I have both Navionics and Inavix. Inavix is a one time fee and Navionics is an annual fee. I find Navionics to have better inshore information while Inavix has better offshore mapping especially when it comes to lease block charts. Also Inavix allows you to share the app between up to 5 devices on apple products. Navionics the subscription is only good for the device you purchased on. They do have some generic maps for free but they dont show much detail.