There is no requirement to use a Bioweigher scale. The BioWeigher CardioTracker system allows you to graphically track your weight against your goals. You can input unlimited weighings from your internet enabled device.
Use your free membership (no credit card required!) for as long as you wish. After you have used the weight tracking features, you may find that you would like to subcribe to paid membership in order to take advantage of the many premium features of the site, such as BMI tracking, Body Fat tracking, Activity tracking, and diet and fitness expert tips.
Meanwhile, enjoy your Free Membership.