In the past few months, we have covered many apps that can help you breathe better to reduce your stress and focus. FLOW takes it to the next level. It is a heart rate monitor and breathing sensor that works with iOS and Android devices. The device provides you with real-time feedback based on the amount of air flowing into your body and breathing pattern.
FLOW detects ventilatory threshold and visualizes your breathing pattern. It is waterproof to 1 meter for 30 minutes. You can find out more about it on Kickstarter.