which app?

sooo both apps have the same info. i have a 21 day cycle.

ovia is saying i ovulated the 10th

glow is saying it was the 14th... cm is hard to say cause I had it the whole time and it turned to ...snot/white/stretchy like(sorry tmi) 2 days ago, lasted for 2 days, just random globs. before that it was just a bunch of EWCM from the 9th to the 14th(with the random snot like those 2 days i mentioned) and now its creamy, bits of stretchy here and there. my cervix position has stayed high and is still high but is medium firm and closed today... my bbt matches glows prediction buuut... idk.. which app would you go off of?

(my period was 2.5 days then spotting sand i logged that on both apps)