Mevics - Wearable that monitors posture & physical activities.
PoseAlert - Keep correct posture while sitting
Fix Posture - TensorFlow blurs your screen when your posture needs fixing.
Breathwrk - Science backed breathing exercises
Lumo Lift - You slouch, it vibrates. Sit straighter, stand taller.
Calm - Calm.com can help you reduce stress and increase calm.