iStockCheck is a free tool to provide Apple iPhone X stock notifications for Apple Stores in the UK.
iStockCheck was developed by Andrew Bennet; it is the successor to a previous incarnation which ran as a native Mac and Windows app. iStockCheck is open source, released under the MIT licence. Feel free to contribute!
iPhone X is now widely available; iStockCheck has been closed until the next iPhone release.
If you have any queries, you can get me on Twitter.