Habitica - Habitica is a free habit building and productivity application.
Way of Life - Habit tracking on iOS
LifeRPG - Automatically prioritize your goals and gain XP for achieving them. Features:
HabitHub - HabitHub is a great mobile app that helps you to plan your daily schedule to organize your life.
Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.
Goal Meter - Goal Meter is an elegant mobile application that helps you to change your habits and maintain your focus at work to reach your goals.