Is "ionic://" scheme used in ios secure like "https://" one or it is like "http://"

As mentioned in the document that the default scheme for ios after wkwebview v3.0 is "ionic://" and that the use of "https://" are not allowed any more but we are using "https://" instead of "http://" in android because https is more secure; so we need to know if the "ionic://" scheme is secure like "https://" one or not and if not what is the alternative that will give us the same security like "https://" on ios.