[chankstein38]

I would guess that's because the numbers this thing spits out are crap. It seems to just output random crap every time. Always 70+ percent US regardless of any attempts at accents or even saying absolutely nothing. Try just mumbling into it

[arrowsmith]

I asked ChatGPT for a list of words that Brits and Americans pronounce very differently, combined them into some silly sentences ("my aunt gave vitamins and herbs to the zebra in the bathroom"), and tested them in the app with my native British accent. It consistently told me that my accent was 80%+ U.S..

This app is, as we say in Britain, complete rubbish.

[plastic_bag]

That must be it. It's almost always 70+ percent US.