I purchased the blue chart App for my IPad. I'm not computer savy at all. I thought I could use this like a GPS on the boat as a backup. The charts are great and very usefull but I can't get it to work like a chart plotter. The IPad is a couple of years old and I do have an external Mifi so when I travail I can use it. It's asking for an external GPS but I don't no what that means or how I would hook it up. The question is can I use my IPhone or handheld GPS.
Thanks
Gary
Thanks
Gary