Topo Maps

Nice app that actually provides access to multiple public map sources without milking you for each one. The support link doesn't work (rather common these days, even for paid apps unfortunately) so reporting here: if you don't grant location permission and hit the "place" button (second from bottom on lower left, looks like a golf green with flag), the app will put up an "unknown location" alert and hang. You'll need to kill and restart it, losing your place.