Cognitive Therapy.

Lumosity - Developed by a team of scientists and experienced designers, Lumosity (Android, iOS)'s free daily brain training games make improving your cognitive abilities -- critical thinking, memory, attention, speed, flexibility, and problem-solving skills -- fun yet challenging. With 40-plus quick and easy-to-pick-up mind games and activities in the free app to choose from, you'll never get bored. There are options to pay for more levels and challenges.

Peak - (Android, iOS) app helps you achieve peak performance with 40-plus games, devised by neuroscientists, educators, and game experts to improve your cognitive skills. Choose from progressively difficult workouts that promise to enhance short-term memory, attention, problem-solving, mental agility, language, coordination, creativity, and emotion control. Or let the app's built-in "Coach" -- part advisor, part tracker, and part motivator -- help you reach your goals.