Loop is a reminders app for the recurring stuff - the rhythms of real life that don't belong in a to-do list. Oil changes. HVAC filters. Dentist appointments. Filing taxes. Two task types: Cycles reset when you complete them. Cliffs are hard deadlines that escalate as the date approaches. The home screen sorts itself automatically. Includes a task library: 35 pre-built systems, add in one tap. App is a one-time purchase, no account, no server. Written in Swift and runs entirely on CloudKit.