We’ve just heard that the new ithlete app has been released/ ithlete pro. Presumably still based on the same underlying HRV engine from HRV Fit Ltd.
The following video tells you a bit more about it.
Having had a quick glance; the feature that stands out is the ability to start to discern the causes of your HRV. You can also import fitbit data as well which looks superficially nice as well. There’s also a ‘team’ app which I hadn’t looked at before either.