When loading the app page, if you are greeted by a blank page, it could be potentially related to your device cookie settings. Please follow the guide to apply the correct cookie settings for the app page to load on your device.
Yes, you can click your profile picture to open the drop down menu, select “Add to home screen” for details on how you can save the app to your device. Doing so will add a Simplyweight app icon to your device screen for easy access. Alternatively, you may see a prompt on your device asking you if you would like to save the app to your homescreen.