If you're like me, don't use QtCreator much, prefer command line and usually have a simple QtQuick view, then this is for you: https://github.com/penk/qml-livereload
QML LiveReload takes
QFileSystemWatcher to monitor file changes, and lively updates the view when possible. It's no match for what QtCreator does but comes handy for simple projects.
Works on remote device too: