Purp - A smart to-do list and goal tracker app

Bit : Habit Tracker - Bit : Habit Tracker is a digital habit tracking app that comes up with features to help you in keeping track of a large number of habits on the basis of their categories.

Nirow - Habit tracking: Automated, Siri-ed, Calendar-ed, and More!

Nomie - Open-source mood and life tracking

Things - Things is an easy to use task manager.

Habit Rabbit - Habit Rabbit app allows users to create life goals so they can track their goals and get things done by using small habits.