I consider it a novelty app. I pull it out as a joke when fishing, “Hey, lets check the fishing adviser out”.
Biggest con is that you have to go through about 12 screens to get a generic information and suggestions.
I liken it to a fishing magazine article about finding fish. It might help start you off on a new body of water, but just like a magazine article, its very general and can’t give you specific info about the body of water you are fishing.