Download of WiScale 3.13 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program is categorized as Lifestyle Tools. The actual developer of this free software for Mac is Withings. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
WiScale lets you view your weight, fat-mass, and blood pressure data. The tool displays graphs where you can look up and focus on any specific date or timeframe. To better understand the effects of your diet or fitness activity, the app will also show you the recommended healthy levels for each category that correspond to your personal profile (age, sex, height).
You may want to check out more software for Mac, such as SafeDog, ezManagerMax or Drink!, which might be related to WiScale.