>Can you give an example?

Web Bluetooth API, and lots of others. My product could use bluetooth but we're forced to work around Apple's Safari limitations and use Wifi instead, which drains the battery faster. We do not want to write a specific app for iOS (which costs us money to build and maintain), which then allows Apple to extort us for a percentage of sales through the app. Bluetooth would be the better option, but Wifi works although is a bit more cumbersome to deal with. So sorry Apple fans, you have to use wifi with our product because Apple reasons.

I am going to open a bottle of champagne when the DOJ finally forces Apple to allow other browsers on iOS.

https://www.justice.gov/archives/opa/media/1344546/dl?inline

But there's still all sorts of wonkiness they just makes Safari non viable. If you don't PWA install, your storage gets cleared alarmingly quickly. If you do install it's still cleared wicked fast. Notifications seem to have incredibly unreliable delivery issues and require PWA installs to work at all. The features are closer to parity than before but the base functionality is still sabotaged deeply. 'The user is secure' with Apple is amazing doublespeak (the second meaning being securely in Apple's pocket with no where to go).

It's worth noting that Interop participants meet and decide via unanimous consent what they are going to work on each year. The anti-trust case against Apple would be far stronger if they didn't show up & find some stuff to work on, to agree to. And with apologies as I break out the tin foil hat, showing up also gives them some leverage to shape what doesn't get worked on too.

Interop 2025 is a subset of web features, but Apple gets a veto on which features get included in each Interop round, and vetoes heavily. It doesn't reflect interoperability in general. Safari also consistently starts out the worst each year, and improves the slowest.

They don't support notifications correctly, they have a semi-broken implementation. Only a subset of sites will work, even though they'll work perfectly on Chrome or Firefox or even minor browsers. Even if you put the site on the homescreen.

>Can you give an example?

Web Bluetooth, Web USB, Web NFC, Web Serial...

Of course Apple will uphold its usual charade to claim that it's about pRiVacy & sEcuRiTy to maintain plausible deniability. They could easily implement it and keep it disabled by default, such that users could make the conscious choice to enable it or keep it disabled. Any adequate analysis of Apple's behavior and motivations must mention Apple's conflict of interest, because Apple will be biased against technology that could diminish the value proposition of "native" apps which Apple has been taxing so unchallenged for all these years.