The original idea was taken from qt-project.org forum. This component uses native Apple UIWebView to draw a webpage in QML. You can change coordinates and size of the component as well as it's anchors.
Just add ioswebview.h and ioswebview.mm files to your Qt project and don't forget to add this line to your main.cpp:
qmlRegisterType<IOSWebView>("com.companyname", 1, 0, "IOSWebView");