Now I'm just stating my opinion and my experience, I love the app for the community AND being able to track my period BUT I notice that since I started doing so it just doesn't quite compare to me naturally tracking my cycle myself. For instance, for me I always just assumed I would get my period on the same day of every month. Now there have been times when it switched up and came early, but when I missed it on the day I assumed I was supposed to get it, which would have been the same as last month, I knew I was pregnant. Now using the app, it gives me earlier dates as it tries to predict it for me and that's where I think people's hopes get high and dreams get crushed of having a baby because they're depending on the app to know and when it doesn't come on that day and then it goes on to skip another 2 days you still feel you have hope and then bam, af shows up. I know I feel crushed hoping I'm pregnant but then af decides to grace me with her presence. That's why I prefer the natural method of tracking but everyone is different. This is just my opinion.