Tried to use OSMAnd last week to navigate around on vacation. For some reason it seems to be incapable of searching for house numbers, which is an instant dealbreaker. I'm very confused as to how or why this is a thing on such a mature product.
I was able to share a location from GMaps WV over to it to get navigation working, and from there the navigation was awesome!
Currently also testing Magic Earth and Organic Maps but I'm very interested to hear from those with more experience.
I meant the developer in the link I posted. Obf files are just the file type that the maps are in. Android directory is when you go into your android file manager, there is a list of folders like android or downloads. When you choose the android folder, the next folders are data, media,and obb.