Incomplete charts

The navionics app is missing 5 out of 9 lakes in my area. I reside from central ontario canada, in a town call barrys bay which is an hour and a half east of algonquin park. The lakes that are shown arent the ones i even fish. So far if this persists for my area and others its not worth having for inland fishing or unless your fishing on lakes like lake ontario which are huge ...

Unsatisfied fisherman about Boating US&Canada, v4.7.2