What is the App Store Connect API?

The App Store Connect API is Apple's official interface to everything App Store Connect does: app metadata, screenshots, TestFlight, customer reviews, sales and finance reports, analytics, pricing, in-app purchases, and more. Access is authenticated with an API key you generate, so you never share your App Store Connect password with third-party apps.

Everything App Store Connect tools read through your own API key is your real data, straight from Apple, rather than estimates scraped or modeled from outside.

Kickstart is one such app, and guides you through connecting the key, issuer ID, and P8 file, stores the credentials securely on your Mac, and uses that connection to power metadata, reviews, TestFlight, analytics, and sales.