I'm not sure if this is available for Android, but I just discovered it on the Apple App store. It's a very simple app that simulates FPV flying, and I think that working on those skills - regardless of ones interest in FPV - can only make one a better GPS drone plot. I was surprised how unskilled I actually was at first simply hovering with no altitude hold, and then things got even more interesting when I had to move left and right. I've never done FPV, but reading through some of the reviews written by folks who do, they say this app is just about as real as it gets.