How accurate is this app for y’all??

Nikki

My period isn’t always normal.. but the last couple of months it’s been spot on with my step mom. I had sex unprotected without realizing that the app said it was my predicted ovulation day! The app said my period was supposed to start Sunday and I spotted like once my step mom has already gotten off and still nothing, so I was wondering how accurate the app has been for y’all, to see if i should consider if I’m late or not, and if i need to worry a little bit. 🙄😂

TIA!