This application lets you check which movies are playing at any time, in your city as well as anywhere else. For each movie, you can see the times it's playing, how far from the theater you are, and a trailer. In order to purchase the tickets, you just have to tap on them and choose how many you want. At this point you'll insert your member id to accumulate points.
Once you have the tickets, you don't need to pick them up, just print them and go to the theater. The main advantage of Cinemex is not having to wait in long crowded lines to make sure you have a ticket for a popular premiere.
For your first purchase you'll have to register and introduce all your personal information with your Cinemex member id, after that each purchase is done automatically with this information, so you'll always earn points for the tickets you get.