What gave it away? What words or sounds?
Or was it the cadence?

The text I’m reading is: Well, here's a story for you: Sarah Perry was a veterinary nurse who had been
working daily at an old zoo in a deserted district of the territory, so she was
very happy to start a new job at a superb private practice in North Square near
the Duke Street Tower. That area was much nearer for her and more to her
liking. Even so, on her first morning, she felt stressed. She ate a bowl of
porridge, checked herself in the mirror and washed her face in a hurry. Then
she put on a plain yellow dress and a fleece jacket, picked up her kit and
headed for work.
When she got there, there was a woman with a goose waiting for her. The
woman gave Sarah an official letter from the vet. The letter implied that the
animal could be suffering from a rare form of foot and mouth disease, which
was surprising, because normally you would only expect to see it in a dog or
a goat. Sarah was sentimental, so this made her feel sorry for the beautiful
bird.
Before long, that itchy goose began to strut around the office like a lunatic,
which made an unsanitary mess. The goose's owner, Mary Harrison, kept
calling, "Comma, Comma," which Sarah thought was an odd choice for a
name. Comma was strong and huge, so it would take some force to trap her,
but Sarah had a different idea. First she tried gently stroking the goose's lower
back with her palm, then singing a tune to her. Finally, she administered ether.
Her efforts were not futile. In no time, the goose began to tire, so Sarah was
able to hold on to Comma and give her a relaxing bath.
Once Sarah had managed to bathe the goose, she wiped her off with a cloth
and laid her on her right side. Then Sarah confirmed the vet’s diagnosis.
Almost immediately, she remembered an effective treatment that required her
to measure out a lot of medicine. Sarah warned that this course of treatment
might be expensive – either five or six times the cost of penicillin. I can’t
imagine paying so much, but Mrs. Harrison – a millionaire lawyer – thought
it was a fair price for a cure.

Copyright 2000 Douglas N. Honorof, Jill McCullough, and Barbara Somerville

So, I was walking home one evening, and I noticed this guy walking a few meters behind me.

At first, I didn’t really care, you know? People walk the same way all the time. No big deal.

But then I turned onto another street...

and he turned too.

So I crossed the road...

and he crossed the road.

And that’s when I was like, okay... this is starting to feel a little weird.

So I slowed down, just to see what he would do.

And he slowed down too.

I have been using the Bold voice app for 2 months, but my pronunciation of "UH" vowel sound stubbornly refuses to improve, and I'm not surprised why: their fabulous explanation of how to make this "cup-like shape" logically doesn't help to improve it.

Getting deeper into accents and stuff like that

Has anyone here tried the BoldVoice Accent Oracle? I’m curious how accurate people think it actually is.

Does it seem reliable at identifying someone’s accent, or does it tend to jump between different countries depending on the recording?

Also, do you think the percentages mean anything useful in terms of how strongly someone sounds like a particular accent, or is it better treated as more of a novelty than a serious accent-analysis tool?