I switched back to Android in large part for KDE Connect. You can get continuity esque features that work with any desktop operating system. I also get to use real Firefox instead of a Safari wrapper. I still use as few Google services as possible, pretty much just Maps.
KDE Connect works just fine on iOS.
It "works" but it is significantly less useful. Notification mirroring doesn't work, you can't read/respond to text messages, it can't reliably run in the background.
These are all due to limitations imposed by Apple.