In reply to thepodge:
Looks like that's because you've a mixture of installed rockfax-routes and not installed routes (or maybe they don't exist in rockfax), which pull the info from ukc. Ukc seems to all be in V grades whereas they're listed with font grades in the rf book.
I'm afraid it's not yet possible to change the grade system in the android app, but Martin will be moving back over to work on that soon.