Sổ tay Đảng viên tỉnh Yên Bái is a free Android app developed by Trung tâm Chuyển đổi số tỉnh Yên Bái. The app is designed to help the members of the Communist Party in the Yên Bái province to keep track of important information and tasks related to their party membership.

The app has a simple and user-friendly interface that allows users to easily navigate through different features. It includes a digital version of the party membership card, a calendar with important dates and events, and a section for recording personal achievements and contributions to the party.

Overall, Sổ tay Đảng viên tỉnh Yên Bái is a useful app for the members of the Communist Party in the Yên Bái province to stay organized and informed about their party membership.