On an iPhone, the ability to enable biometrics (Touch ID or Face ID) for specific apps is typically managed by third-party apps or integrated features within certain app.
Here's how you can generally manage biometrics on iPhone:
Touch ID or Face ID Setup: Ensure you have set up Touch ID or Face ID on your iPhone. You can configure these settings under "Settings" > "Face ID & Passcode" or "Touch ID & Passcode."
App Installation: Download and install the chosen app from the App Store.
App Configuration: Open the app and follow the on-screen instructions to configure it. You may need to grant certain permissions for the app to work effectively.
Select Apps to Lock: Within the third-party app, you should find an option to select and lock specific apps using biometrics.
Remember that app offerings and features can change, so be sure to check the app's details for the most accurate and current information. Additionally, iOS updates may introduce new features, so keep your device updated to the latest iOS version.