My events and tasks application contain a set of features:
Add an unlimited number of appointments, events, and tasks.
Does not contain annoying ads.
Reorder tasks as you want in a drag-and-drop way with ease.
Ability to delete, edit and add.
Countdown for days, hours, minutes, and seconds.
Ability to choose the preferred alarm time.
Add pictures of the task or appointment.
Ability to share via WhatsApp or different social networks.