Use APKPure App
Get Apnea lite old version APK for Android
Application for the training of static apnea
Very often people who complete freediving course, ask how you can train your breath hold home away from the sea, in order to better prepare for the next trip and to not lose shape.
Quite effective and popular among freedivers exercise, can significantly increase the length of breath is straticheskaya delay training on CO2 and O2 tables.
http://freedivingsafety.org