A Password Manager functionality is available ONLY on Windows 10/11.
iOS operating system allows use of the hardware security keys for passwordless logins into accounts based on the FIDO U2F and FIDO2 standards. Services that support FIDO login methods include Google, Facebook, Twitter, and Dropbox, and other platforms.
Minimum System Requirements:
iOS 13.3 or higher
Physical FIDO2-compliant security keys are supported by the Safari Web browser (version 13.0.4 or higher) and third-party applications (such as Gmail, Facebook, etc.) on iOS.
You don't need to pair the Hideez Key with your computer iOS device, you only have to follow the desired services official guidelines.