I really appreciate the exposed API. I wish more app developers would be developer friendly instead of forcing you to use their solutions.
But Besides this app, you need to create a piece of code in you theme, so customers can click on it. And then, this app receives that info and saved in you store. Simple.
Swift Gift Shop
I use this great FREE app on few my stores and very satisfied !
Great functions for FREE app !
Look very nice !
Thank you !