keweon on iOS
At the moment I know 2 Apps for iOS devices. The first thing is DNSCloak and in addition there is this App:
Morhill DoH Switcher von MonkeyBroker, LLC
My son is using this and this App is doing it's Job. At the moment this App supports only DoH but if someone can contect the Dev I guess DoT support should be not a big problem.
iOS device Apps also using manually added Root Certificates. If Apple supports also with the next iOS "Privacy DNS" then I' m done with Android.
It would be great if some people can test this App (it's Freeware) and give some Feedback.