What is an API key on app?

An API key or application programming interface key is a code that gets passed in by computer applications . The program or application then calls the API or application programming interface to identify its user, developer or calling program to a website.

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What is Apple private API?

Private APIs provide a way of accessing parameters or functions that aren’t documented in a publicly released software development kit (SDK) or a related project. Developers working for Apple can use its private APIs as needed, but the company’s App Store rules disallow third-party developers from doing the same.

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