An app for Abbott's FreeStyle Libre glucose reader is said to be the first third-party iOS title to make use of the NFC chip in Apple's iPhone, previously reserved only for Apple Pay.
With iOS 11 Apple introduced Core NFC, allowing third-party iPhone apps to scan NDEF (NFC Data Exchange Format) tags. Notably the technology also requires an iPhone 7 or better, despite NFC chips being in iPhones as old as 2014's iPhone 6.
Access to NFC has been a contentious point with developers, some of whom are accustomed to the relatively open support on Android devices. Indeed Australian banks fought a battle to offer their own digital wallets through NFC, but Apple resisted and was ultimately supported by the Australian Competition and Consumer Commission.