Core Location

Core Location is the definitive framework for managing geographic location, altitude, and orientation on Apple platforms.

This framework leverages hardware like GPS, Wi-Fi, and Bluetooth beacons to deliver precise user coordinates and heading data. Developers use the CLLocationManager class to configure delivery patterns (such as significant-change monitoring or region monitoring) while balancing battery efficiency with accuracy. By integrating with the CLGeocoder class, the API handles the heavy lifting of converting latitude and longitude into human-readable addresses (reverse geocoding) or vice versa. It is the engine behind every location-aware feature on iOS, macOS, and watchOS, enforcing strict privacy controls through the user authorization flow.

https://developer.apple.com/documentation/corelocation