LogicLike - Improve logical thinking through engaging brain games
Next! Fitness - A.I. powered gym
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.
Focusmate - Distraction-free productivity via virtual coworking
JobFlare - Brain games for job seekers
BodyGuide - The app that helps you self-solve aches, pain and tension