IOMTT.COM was run by Duke Marketing Limited in some form of partnership with the IOM Government.

That partnership (as I understand it) has ended and the IOM Government has launched its own site https://www.iomttraces.com/

There will be a new live timing app on the Government site so I hear. I have no idea what if anything Duke may be doing on their own. As the app relies on transponder data then that must come from the Government and I'd guess they won't be dishing it out for free.