You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
The noise stopped before the service appointment but I agreed with Tesla that it was best to go in for a safety check. The engineer removed the front wheel and checked the parts and they were all OK. He then took it for a test drive and heard a noise. He asked me to go on another test drive and there was no noise.
As all was OK structurally I have taken it back and if the noise reoccurs I will record it and go back but there seemed no point in trying to find a problem when it did not want to be found.