mystc app gives you the ability to control and deal with your own mobile and landline numbers in STC by providing you a lot of services and features that help you to do your operations easily, like viewing the bills and pay them, recharge prepaid numbers and transfer amounts between them, subscribe and unsubscribe in packages and services, monitor your data usage, view qitaf points and redeem them with gifts, locate branches and wifi spots in the kingdom, and a lot more features that saves your time and effort.