Just a few things to point out!

Most users should stick to the free version. I upgraded to the $2.99 version because I have PCOS and would like to track my moods and symptoms (which is enabled with the $2.99 version of the app). But I can see how a lot of women might find that useless, or Im sure if I did more digging I could find an app with more additives....Anyway, I like the app, the thing that MUST be changed is the wording!!! It maps out which days you "cannot get pregnant" when it should say "you are LESS LIKELY to get pregnant on those days. Could be very misleading to someone who doesnt know better.

Molsthemols about Dot Period & Fertility Tracker, v1.2.1