Brain Games - Boost memory power with free brain games

Habitica - Habitica is a free habit building and productivity application.

Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.

Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.

Pixelogic - Daily Picross - Nonogram logic game with 5000+ puzzles and a daily puzzle

Loop Habit Tracker - Loop Habit Tracker (AKA uhabits) helps to create and maintain good habits in order to achieve their...