A breathing assistant training device focused on lung capacity, lung endurance and lung muscles. By blowing air through the mouthpiece, this device provides accurate data when measuring inhalation and exhalation levels. The product crafts a customized breathing exercise by taking this data into account. It comes with a sensor that has an accuracy of 0.001 L/M. Via the mobile app, all measurements and exercises are archived. It has a long-lasting battery and if used at a rate of 30 minutes per day, the power will last for 20 days. The charging time for full power takes up to 4 hours. The device also has a detachable mouthpiece for hygiene and has an ergonomic design.