Gateway Keys
Use your Production key in App Store builds and your Development key while building and testing.
Never ship a Development key in a production app. Production keys are protected by Apple App Attest — every request is cryptographically verified to come from a real device running your real app. Development keys skip this check so you can test on simulators, which means they have no device-level protection. If a Development key ends up in an App Store build, anyone who extracts it can make unlimited requests on your behalf.
API Keys