CalendarTask - Efficient life

CalendarTask - Efficient Life helps you quickly record chores and schedule tasks, syncing in real time across mobile, PC, and iPad. It offers desktop widgets, countdown days with themed cards (birthday, exam, anniversary, festival, default), and highly customizable calendar settings for color, size, and layout.

For extended features, the app provides automatic cross-device synchronization, history backups, sub-accounts for life/work/study content, automatic extension of unfinished tasks, and online/offline device management, all without limiting the number of devices on the same account. All features are available for free.