Streaks - The to-do list that helps you form good habits.
Capsicum by Illuminated Bits - Plan your day. Track your habits. Tell your story.
Taskful - Deadlines, meet your match.
Task List - Personal task manager and to-do list app for iPhone and iPad
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Rest Your Eyes - Prevent eyestrain caused by screens with the 20-20 rule.