FamilyCookbookProject.com is a web based cookbook software. By default, there is no icon on your computer or phone. You simply add a bookmark in your favorite browser.
You can then add an icon or shortcut for quick access. For a phone or tablet, try this site's suggestions:
http://www.howtogeek.com/196087/how-to-add-websites-to-the-home-screen-on-any-smartphone-or-tablet/
Here's a way to add a browser shortcut on your computer desktop:
https://www.webopedia.com/quick_ref/how-to-create-a-desktop-shortcut-to-a-website.html