I went with these
Came today, looked fine so far!
UK? Those look alright: https://www.amazon.co.uk/FitBeast-Resistance-Different-Exercise-Powerlifting/dp/B087CSNDRT/ref=mp_s_a_1_4?keywords=resistance+bands&qid=1670929874&sr=8-4 a little but expensive but fine for little over 30 bucks. The app is probably crap (like most apps).
Can anyone give any advice on if this set of resistance bands are any good?
If not, which one would you recommend? Many thanks!