The BACtrack app provides a way for you to quickly and accurately know your BAC. Simply connect to a BACtrack bluetooth breathalyzer such as the C6, C8, or Mobile and feel confident about your sobriety. The app allows you to save and track your BAC, location, and date/time of the test. Your information is never shared unless you explicitly choose to share a result with a friend or family member.BACtrack was the first company to ever receive FDA clearance to sell breathalyzers to consumers for personal use. Using a personal breathalyzer is a great way to enjoy yourself responsibly. As with anything health related, you should seek advice from your doctor or other qualified health professional before changing habits.