I am looking for a mobile app that has contour line maps and gps. I don't want to pay $15/month for the navionics app, I am on a college student budget. I found the iboats app that is a one time payment of $20 for the US maps. That is an option. The maps are not as detailed as Navionics, but I can study up online to find the more subtle structure. Do any of you guys have experience using apps other than navionics for your on the water contour maps? Any recommendations for good apps? Thanks.  

I'm using the I-Boating app on my Galaxy Tab 8" - I think the detail is very good. Here's a screen-shot showing the recorded track of my 'best of the year' catch last year. Recording your day plus setting waypoints is one reason I went with that one.

I use fishbrain

my issue with the iboats is that the maps are different than navionics. On the navionics web app i find good looking structure, but it looks way different on the iboats app. I don't know which one is more accurate.

 

In my experience, Navionics is more accurate on most lakes, 

but I've also encountered lakes where i-boating is more accurate.

It really depends on the water, but you can't beat the price of i-boating ?

 

Roger

The app says my sub expired in October 2018, and I've been using the app just fine.  Maybe I'm not using all the features, but this serves my purposes fine.