If youre looking for lakes and streams, DO NOT BUY!
I purchased the 9.99 us app and then the $5 add on and it gave me absolutely no help. The only info that is worthwhile is on the major rivers (Mississippi, Missouri, ect). Even the major state park lakes arent detailed out. Save your money.
Chibru1 about
Navionics® Boating, v7.0.1