To install the application on your iPad, you can either visit the page listed below, or simply access the App Store available on your iPad, then search for "Healthy Edge Mobile". You will have the possibility to install the application.
System requirements: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
App Store link: https://itunes.apple.com/us/app/healthy-edge-mobile/id959027195?mt=8