Here Maps is one of the best offline navigation application available right now. The application provides high accurate information about map and navigation. The application is completely free with detailed navigation. HERE WeGo - City navigation & Offline maps app provide up to date and more active accurate traffic information and navigation routes. The best thing is you can use it online or offline. If you need to use the offline map, you need to download certain area as offline. You can download a complete state map. Comparing to other offline maps, here maps takes much lesser amount of space on your phone's memory.
HERE WeGo application contains details of transport information in 1300 cities around the world. Get to anywhere you need to go via subway/metro / underground, bus, bike, train, tram, or ferry. Some applications like TripAdvisor are also using Here apps.
The application is very simple to use. You can browse any place on earth. Or simply search any place where you want to go. And get directions easily. The application is available on both android,iPhone and windows phones. More than ten million users are using here maps. And the application has a 4.4-star rating on google play store.