What kind of NFC-Tag is only readable in Shortcuts App?

I just got my iPhone 11 pro max and wanted to see, if it can read the nfc enabled wrist band of my local gym. There are several nfc-apps on the app store and additionally the shortcuts app is capable of reading nfc-tags. When scanning the wrist band with the shortcuts app, it is recognized. But every other app does not recognize it. Are there different flavors of nfc? Is this just a iOS quirk? Is there a reason why only the shortcuts app can see this tag? **Background:** The local gym has some kind of nfc-based member-card. In fact its not a card, but a wrist-band with a tiny nfc-chip in it as it seems. The wrist band reader on the door is made by a company named "Gantner". In the long run I want to get rid of this silly red wrist band and just use my apple watch. But I think this is not (yet) possible. Nevertheless I am curious to understand what is stored in this band and how nfc works in this case. ---------- **Update:** Added Apps [NFC for iPhone](https://apps.apple.com/de/app/nfc-für-iphone/id1249686798) , [NFC-Tools](https://apps.apple.com/de/app/nfc-tools/id1252962749) , [NFC21 Reader](https://apps.apple.com/de/app/nfc21-reader/id1293225257) , [Simply NFC](https://apps.apple.com/de/app/simply-nfc-tag-writer-reader/id1262550712) , [NFC TagInfo](https://apps.apple.com/de/app/nfc-taginfo-by-nxp/id1246143596) and a few others.