Breathing Exercise is a free lifestyle app developed by tpmanc for Android users. This app is designed to train the breath technique with the "Foursquare breath" exercise. The exercise helps restore optimum muscular tension and is commonly used by free-divers, people who dive without scuba gear.

With Breathing Exercise, users can easily perform the Foursquare breath exercise. The app provides a step-by-step guide to help users master the technique. The interface is simple and user-friendly, making it easy for beginners to get started.

Overall, Breathing Exercise is a great app for anyone looking to improve their breathing technique or anyone interested in free-diving. The app is free to download and use, making it accessible to everyone. However, it would be great if the app included more breathing exercises to provide users with more variety.