If you don't pay for the app, which is subscription based, it's only good for a calander tracking your period. Everything helpful in this app is locked behind a paywall. You can find plenty of period/ ovulation trackers that don't dangle carrots of information constantly and Google what you need to know instead or call your OBGYN. I also hate being notified my period is one day late, one day late is nothing to be hopeful or concerned about.