Exist - Track everything in one place, understand your life.
Habitica - Habitica is a free habit building and productivity application.
Gyroscope - Gyroscope is a personalized dashboard for tracking your life.
HabitBull - HabitBull
Strivo - Track your goals and have fun doing it.
Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.