Accuracy of Ovulation Dates on Eve?!?

Ashley

So according to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>, I had a 27% chance of pregnancy on the 16th (Monday) and a 33% chance of pregnancy on the 17th (Tuesday). My partner and I aren't exactly TTC right now, so I don't test for ovulation days or measure my temperature. When I looked up my ovulation dates on different sites, they gave me a different date than <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>. Just curious! For you ladies who are actually TTC, how accurate is <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>'s prediction on when you ovulate?

I thought my ovulation date was during the middle of the month so we had unprotected sex and he finished inside on the 16th when I had a 27% chance of pregnancy. We're not TTC but we're also not trying to prevent pregnancy at the same time. Your opinions would be greatly appreciated! 🙂