I have been using bookmyshow.com from 5 years. This is one the site which I can trust. App design, ease of use is just excellent.
even my parents can book a ticket from this app or site.
UI, transactions.ease of doing payments. minimum clicks, its just wonderful.
though it offers many discounts, but I never got any, I still like this app because of its simple and easy process.
One cons is it charges convince fee per ticket that results really costly when I am booking more than 5 tickets.