Calendars by Readdle is a powerful planner tool packed into an easy-to-use app for anyone who wants to be more organized. Calendars allows to combine all your calendar accounts as well as tasks and todos together to see everything at a glance and manage your time without effort. Used by more than 30 million people. The iPhone Calendars app has won the Red Dot Design Award. Available on iPhone, iPad, Mac, and Apple Watch.