I enjoy fishing new bodies of water. I like the challenge of catching fish on a lake that I have never seen. One tool that I use to catch more fish is the Navionics app. This app shows you the contours of the lake, fishing spots, boat ramps, marinas, and the weather among other features. I think it is a wise investment for fishermen and boaters.
The app will cost you $9.99, same as the cost of a new lure. I use this to study lakes before going fishing to identify productive fishing spots. I was surprised how many lake are listed. I was also pleasantly surprised to see all of the very small local lakes are on here too.
It is also very helpful if you do not have a fish finder with a mapping card built in. Simply pull your phone out and see exactly where you are on the lake. It plots your current location while using the app. I know ice fishermen who use this and love it because of this reason alone. They can walk exactly to the spot they want to fish, drill a hole, and start catching fish.
I also like this app because it shows you boat ramp locations and marinas. This is very helpful when driving to a lake that you are unfamiliar with. You can quickly see the ramp locations on the lake and plan your route. It also makes navigating the lake much safer because you can locate the shallow areas before you launch your boat.
If you love to fish or just want to be a safer boater, I would recommend downloading the Navionics app. I know it has helped me.