Beeminder - Beeminder
Habit List - Create good habits and break bad ones with the app that keeps you focused.
GoalsWon - Human accountability coaching for busy people
Autohabit - Simple iOS app to develop good habits
Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.
Henry - Habits & Wellbeing - A new kind of productivity app focused on habits + wellbeing