We keep things simple for you!... Simply step on your new body fat scale and the INEVIFIT APP automatically connects and saves all of your body composition measurements. Metrics include Body Weight, Body Fat Percentage, Muscle Mass, Body Water Percentage, Bone Mass, BMI, Visceral Fat, & even your basal metabolic rate which tells you exactly how many calories you should be eating! Our FREE INEVIFIT APP syncs your smartphone seamlessly to the scale and allows you to easily track your body composition with a simple touch. *Compatible with FitBit, Google Fit, and Apple Health. The INEVIFIT APP uses an Advanced User Profile to get more accurate body composition results based on your age, height, gender, activity level and even bio-electrical impedance to ensure that you get accurate results every time. The easy to read charts clearly display your progress, and the detailed body composition information provides you with a thorough understanding of each what your results mean. The more the merrier... The INEVIFIT APP allows your whole family and friends to get and track their body composition since it can store an unlimited number of user profiles. The scale runs on 3 AAA batteries, included in the package: it works out of the box. All INEVIFIT Scales are covered by us from any manufacturing defect your body weight scale might present for five-years. Our US-based support is available to help seven days a week so you can count on us no matter what! Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.