Is the heart rate really an indicator of gender?

I just had a midwife visit and got to hear my baby’s heartbeat for the first time. I’m 18 weeks and it was 160bpm. I’ve read that anything over 140bpm is more likely to be a girl. Although I also realise this could be as much rubbish as cravings being an indication of gender.

I just wondered if anyone has had the heart rate indicator actually be true for them?

This is just for fun really, I’m so excited to find out what we are having I can’t help but look for clues 😁