Way of Life - Habit tracking on iOS
Gone - An ephemeral to-do list
Streaks - The to-do list that helps you form good habits.
Habitica - Habitica is a free habit building and productivity application.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Taskade - Make lists, organize your thoughts, and be inspired to get things done. Taskade is a collaborative space for your tasks.