Sorted 3 is an iOS and macOS task manager and daily planner built around hyper-scheduling — a system that assigns every task a specific time and duration, turning a to-do list into a concrete, time-mapped day. Created by Appxy and launched in 2019, Sorted 3's Magic Auto Schedule feature arranges tasks around calendar events automatically, creating a seamless visual plan of the entire day. Its tight calendar integration and elegant timeline display make it one of the most visually satisfying task planning experiences on Apple devices.

Reference:

Time Management on Wikipedia

https://en.wikipedia.org/wiki/Time_management