Well that’s a disappointment. The app should of course be able to run as a client to the desktop app, like the Zwift Companion. It’s not exactly rocket science.
I just signed up, enticed by the better plans (Zwifts plans are decent, but they are unable to handle stuff coming up, like getting sick. No adjustments possible, its back to the beginning or just accepting that you lost a week), but I didn’t realise the mobile apps were so behind. We’ll see after I’ve tried TR a bit more, getting a better feel for the pros and cons, but stuff like this makes me consider taking the 1 month refund and just accept the inflexible Zwift plans.