Ok, but not ideal – Good Maps - for Google Maps, with Offline Map, Directions, Street Views and More Review

Can save offline map, so it did work, however, can't search in offline mode, offline map only has minimal level of info, so even it works but not useful. If you want offline map function, maybe forever map2 is better.
Review by Chfu on Good Maps - for Google Maps, with Offline Map, Directions, Street Views and More.