Learning to breathe properly is a great way to improve your athletic performance, reduce your stress, and improve your health. The OPUMP is a smart breathing trainer that combines with your smartphone for respiratory muscles training. It measures your breathing flow rate and volume in real-time. The companion app comes with 5 breathing sessions and games to keep you motivated.
You will have to train for about 10 minutes to improve your breathing. The OPUMP app provides you with breathing exercise tracking. More information is available here.