The road to sobriety is often traveled with the support of family and friends. Smart Start wants to be a part of your support system to ensure that you succeed. And our portable breathalyzer is one way that we help you during your journey. Our home alcohol monitoring device, SmartMobile™, is more advanced than EtG testing, and the most affordable at just $4 per day. Millions of customers depend on our device to deliver the most accurate results. If you have questions about our in-home breathalyzer, simply review the FAQ section. Or feel free to contact the Smart Start customer service team anytime via chat, email, or phone.