Ovaluation day on program

ibtisam

Did all of you ladiescount.on ovaluation date on this App? What i mean is it for sure? Its gave me tht my ovaluationdate on CD14 . But my ovaluation Mucus started every month on CD 9. ON CD 13 &14 I am fully dray should i count on ovaluationmucus or day on this app?