Things - Things is an easy to use task manager.
Purp - A smart to-do list and goal tracker app
Everlist Task Manager - Groceries, trips, errands, and daily todos managed simply. get your tasks under lovely control.
Llama Life - Say goodbye to never-ending lists, and hello to daily bliss
Nirow - Habit tracking: Automated, Siri-ed, Calendar-ed, and More!
Flow - Stop managing projects from your inbox.