Has anyone else on here, tried it or know anyone else who may have tried it??

I 1st saw it here on GLOW, it's a monitor that you where while you sleep, it syncs 8 different changes that our bodies go through, during a cycle, up until ovulation, and it gives you a scientific reading of your 5 most fertile days, logs your ovulation day,and the day your AF is expected 🤗🤗🤗 it's $200, but well worth it, if it works!! It uploads everything into your phone. Any thoughts???