Ok y'all, Chase brought my attention to this FREE app a while back that almost does it all, navigation, Topographic maps, tracks, markers for finds, pretty much everything, and they just added USGS Lidar maps. You can pay for the pro version but the free one is crazy good until it isn't. 😀 It's an app called CalTopo, for both iPhone and Android. I only use Android so there may be differences, but it's pretty full featured, you can't save photos of finds yet but you can mark them and la