2025-09-12 00:00:00 The PROTOPKU application is a mobile application for loyal PROTOPKU members wherever they are. This application makes it easy for you to carry out various transactions such as topping up credit, purchasing electricity tokens, PPOB, etc. With this application, you can easily check the latest credit prices, view transaction history recaps, your balance change history, downline activity, chat with customer service, and so on.