So I'm looking for advice on navigation software to run on my Samsung S4 tablet. It has a 512GB card in it as well. A requirement is that I want to have large amounts of offline maps, as in entire states. When we go out, we never really know where we will end up and to can't really plan our routes ahead of time. I tried Gaia, but it seemed like getting large offline maps wasn't practical. I'm currently running US Topo Maps Pro, which does fill these requirements and it has worked reasonably well allowing me to download topo maps as well as USFS maps and a few other types as well. However, I was hoping to also get access to Caltopo maps, which doesn't seem to be supported in this app. Additionally, I am hoping for something to create A to B via C routes. The current app does a good job in tracking me and exporting these tracks to GPX, which is great.
TIA
TIA