And Google maps does not require a Google account. I always use my android phones without any Google account and maps works fine. I think OSMAnd is way way better anyway but they don't have the public transport integration so I still use Google maps for that once in a while. For everything else OSMAnd really rocks and its maps are better than what Google and apple offer especially when you're not a car user.
But really expecting apple level polish from a free outfit it's just not fair.