How accurate are Glow's predictions?

Kathryn • 22, Happily Married, Mother, College Student, Pinup Doll, Southern Gal transplanted in Michigan ❤️💚
I haven't been to the OB yet since I recently moved in December and see my new primary physician in a few weeks. I'm a little over 8 weeks according to the app. That means my last period in January meant I conceived. I couldn't help but check ahead on Nurture to see what the last day at 40 weeks would be and it's my birthday! If I carried to full term, that would mean my baby would be born on my 22nd birthday as the best gift ever!! How many of you gals have had close or spot on symptoms/predictions from this app, even compared to your OB? 😊