I read this information below link: Restricting usage for an Android key for a Google API
So My question is about I have php project as a backend my project has API calling from mobile app like android and iOS. I got it how to restrict calling API android app downloaded only from play store so How can I implement this idea in my swift project to Restrict calling my api only apps that installed from AppStore. How do i know if installed from app store or not in my iphone, I need to call my API only apps from Appstore.
Can any one help me?