Go to the App store on your device (App Store for iOS or Play Store for Android) to download the app. Just search for "Actofit Smart scale" in the app store, or follow the links below to automatically download the app.
For IOS: https://itunes.apple.com/us/app/actofit-smartscale/id1317677263?mt=8
Compatibility Devices with Smartscale Pro
Android OS 6.0 & above / IOS version 9.0 & above