One difference between Android and iPhone is that when an NFC tag is tapped that contains a URL it will bring up the URL in your default browser on Android but with iPhone you get an extra prompt from Safri asking if you wish to open the URL.  This is not such a nice look, but now since IOS 14 as a developer you can create an App Clip whcih is a small applet and if it is asscoiated with a URL thhe user gets a neat dialogue with a picture and options for next such as open on a browser or open the app.

We have seen client using this when we test our encoded tags for them and it make such a difference to the user experience.

Worth looking in to if you have your own application on IOS. The developer documentation can be found here: CLICK HERE

IOS App Clips