I use the IPhone apps while I fish. The Apps for Navionics is cool but I use the Fishing Calendar App the most. It shows the lunar phases, peak times, will track your photos, and mark way points on the lake for your catch. The last one is good just in case you forget to mark your depth finder. Navionics is cool when I fish the Ohio River. I have it synced with google earth and if you get ahead of the app Google earth can show other structure you may not have seen on the screen. Good luck and hope either of them help.

Dan

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