Garmin owns navionics there chart plotter sounder/combos come preloaded with g3 charts, cheaper than cost of apple ipad + navionics app and you get a sounder + it’s waterproof
On the other hand, the iPad is useful for a lot of things beyond just being a chart plotter. I keep a copy of all manuals for everything on the boat, and if I wake up in the morning and it’s chucking down rain, it’s a good time to catch a movie or some such down below.