Fertility Tracking

Kat • Eliana Lynn 03/05/2019🌈💖 Alexander James 06/15/2020🌈💙 Amelia Elizabeth 03/24/2022🌈💖
Does anyone have the apps Flo or Ovia? Or used them before? 
I downloaded both because eve/glow hasn't had my period start date right for about 6 months now. I downloaded the apps to further track my fertility and cycle as a whole to see if it's the apps or if I'm just all jacked up, before I spend money to see an Ob-Gyn. 
Would you recommend them? If not, why?
 Thanks ladies!