That's amazing - Would it be fine if I covered this on my (very, very small) YouTube channel? My content isn't really related to anything fitness, but I am in the process of getting a bit fitter at the moment, so this could be a very fun thing to do and talk about for me, as I do have a weak spot for both RPGs and privacy respecting apps!
GDPR has plenty provisions where other laws or considerations may be more relevant than it, negating it in such cases.
I still do think the GDPR is extremely important, but it is no silver bullet,sadly.