The Flagfit2.0 tool is an add-on application for the smart bracelet DB02. 

If you want to be fit and healthy, this is the perfect application to have on your phone or tablet. This way, you can measure your daily activities, like how many steps you have taken and how many hours of sleep you’ve gotten. In addition, you can also measure your heart rate and blood pressure. All you have to do is download and install this tool from the Google Play Store. The best part of this app is it is completely free. You do not have to worry about paying a single dime.