Really nice, and I say that as someone that built a quite popular mobile web framework that duplicated a lot of iOS UI (Ionic). One thing I noticed is the swipe gestures aren’t working. This is all very doable on the web which many people don’t believe. It’s pretty wild what the web platform is capable of, the gap is absolutely with web devs who don’t know how to put the many modern APIs and capabilities into practice.
In my experience the gap is also about supporting a wide range of users and their old or not so powerful devices. Sure polyfills do the job of support but at the cost of bundle size and compute, which may degrade the experience for that particular audience. My number one moto in web app design and development is KISS.
And the amount of fine-tuning done on ios for the various gestures is quite astounding. Re-creating them using browser APIs isn't really entire possible.
You can extremely close if not imperceptibly there for a lot of interactions. The bigger issue is actually mobile browser “chrome” getting in the way (i.e. baked in gestures in mobile browsers)
