Google Earth invites you to explore the world with a single touch from your mobile devices. There's no exaggeration to call it a must-have for any people of this era because you can see a splendid satellite view of famous landmarks, broad plains, lofty mountains and your own home - all with elaborate details.

Outside of Google Maps, Google now introduces a standalone Street View app to let you explore and capture numerous places in 360-degrees. Launched in 2007, Google Street View is previously a technology rolled in Google Maps and Google Earth which provides panoramic views of worldwide streets.

Another app offered by Uber Technologies, allowing users to ride instead. Sign up to drive first at partners.uber.com to get a start. And then upload your vehicle documents and download this app.

Tube Map London Underground provides the official map of London's underground traffic network for users to plan their route and obtain the optimal transfer schemes. It works both online and offline, which means you can use the app underground when there is no internet connection.

World Around Me helps users to find places like restaurants, banks, subway stations and more in a unique way called Augmented Reality.Instead of reading maps, you may just turn on your phone’s camera and the full detailed information around your location will stretch out on your screen.