The Auto-CPAP / APAP machine is designed for treating obstructive sleep apnea (OSA) effectively. It can auto adjust air pressure to keep user's airway unobstructed while maintaining maximum comfort during sleep.
Smart Breathing Trainer can strengthen throat muscles so the airway has less chance of collapsing during sleep. It's an ideal way to improve symptoms of OSA.
Using Auto-CPAP / APAP and Smart Breathing Trainer together may well be the best solution to treat OSA.