EventKit Create, read, and manage calendar events and reminders. Covers authorization, event and reminder CRUD, recurrence rules, alarms, and EventKitUI editors. Targets Swift 6.3 / iOS 26+. Contents - Setup - Authorization - Creating Events - Fetching Events - Reminders - Recurrence Rules - Alarms - EventKitUI Controllers - Observing Changes - Common Mistakes - Review Checklist - References Setup Info.plist Keys Add the required usage description strings based on what access level you need: | Key | Access Level | |---|---| | | Read + write events | | | Direct write-only event creation | | |…