The App is an annual subscription. To keep up with any map updates, you have to keep your subscription current.
You can view the current
maps on the Navionics website's Web App.
No map card will have more/better contour data than what the Web App shows.
Edited by Wayne P. (12/27/17 05:57 PM)
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, SOLIX 12 SI, 360, RC-1