Who offers the best lake maps

I had an Iphone 4 that got rediculasly slow so I switched gears and dropped the slow Iphone junk and moved to a Samsung S5 but need to download another lake maps app like the one I had, Navionics, on my Iphone. I've tried numerous times to re-purchase the $10 version of USA maps but am tired of trying is there another app as good as Navionics?? I'm hoping to hit the water this week so in need of lake maps as Broken Bow Lake is pretty large and that channel of Little River can be treacherous.

None better than Navionics for your phone. I think the app will have to be repurchased for the android phone through your App Store. It's 14.99 now I think. I think means "I don't know" so you'll have to check it out.