Habitify - The easiest way to keep track of your habits
Streaks - The to-do list that helps you form good habits.
everyday.app - Every day, it gets a little easier. But you gotta do it every day, that's the hard part.
Taskful - Deadlines, meet your match.
Repeat - Cross-platform mouse/keyboard record-and-replay automation with advanced programming features.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.