2apps which to go by. confused

Am

so I have two apps <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> and glow, 1st one says my fertile window was Saturday all til today, then glow says tomorrow til the 7th😑 I'm lost but still doing both lol I tried the pre seed on Saturday should I try again like tomorrow? I'm so lost, I'm going to take opk test tonight and tomorrow just in case.what y'all think about the apps? help please thank you in advance.