InstaCal

Time, explained.

Why are you late even when you leave on time? Why does everyone double-book eventually? Why does crossing off days on a countdown feel so good?

Time, Explained is a series of short lessons on the psychology and mechanics of time: planning, scheduling, travel, and the calendar habits that make a day work. Each one teaches a single idea you can use today, with every fact checked against its sources, and ends by showing how InstaCal helps with that idea.

InstaCal is a calendar for Mac, iPhone, iPad and Apple Watch. It works with Apple, Google and Microsoft 365 calendars, plus iCloud, Fastmail, Yahoo, Fruux and other CalDAV servers. It contains no analytics and no tracking.

InstaCal is $19.99 once on the App Store. One purchase includes the Mac, iPhone, iPad and Apple Watch apps. No subscription.

New lessons every two weeks.