The behavior of Progressier's Installation Banner varies across platforms.

On Android, macOS and Windows, the Installation Banner will no longer appear once the PWA has been installed. These platforms provide browser methods to detect whether a PWA is already installed on a user’s device. So everything can work as expected: if the PWA is installed, the banner no longer appears.

On iOS, the Installation Banner continues to display even after installation. This is because Safari does not provide a way to detect whether a PWA has been added to the home screen. Installing a PWA on iOS creates a completely separate app instance, and Apple intentionally allows users to add the same PWA multiple times—enabling them to stay logged in with different accounts.

To help address this iOS limitation, the Minimum Interval setting for the Installation Banner ensures that users opening your app in the browser don’t see the prompt too frequently.