Glow vs other apps

Has anyone else had the problem of irregularity and glow not really help pinpoint ovulation times? I have been actively ttc for over a year now and recently had a pap done and she said I was ovulating and my app didn't have me ovulating till the next week which made me wonder if I had been missing my window this whole time as my hubby has a time stressful job. So I downloaded fertility friend and added my info I've kept from glow and it had an entirely different window. Just wondering if anybody has gotten pregnant from this other app as help or just insight about glow.