So I have 2 different apps I use to track my periods. Ovia & Glow.. both are telling me 2 different things.. What one should I trust more. Glow I feel is more up to date about my information and is more of an understanding one after information is entered. Like, it updates more with the more information i put in.. but I don't know, one says my period is due in 6 days the other says 12.. I've been having cramping the last few days with breast/nipple pain.. Help?

this is my ovia one.

this is what glow is.