Khách hàng Tiện Ngay is a free and convenient utility app developed by TienNgay.vn. With this app, users can easily pay their utility bills, including electricity and water bills, and keep track of their payment history. Additionally, the app allows users to rate the services provided by Khách hàng Tiện Ngay.

To use the app, simply download it for free and log in using your registered phone number at the store. The app is easy to use and provides a convenient way to manage your utility bills.

Overall, Khách hàng Tiện Ngay is a useful app for those who want to keep track of their utility bills and pay them conveniently. Download the app now and experience its benefits for yourself.