Useful, stick to the free version

Ive been using the free version of this app for a year and it tracks my period to the day almost every month. Its very helpful for me as far as preventing pregnancy and making sure Im never surprised or unprepared for my start date. Easy to use and understand. I wouldnt bother paying for any other functionalities because I dont need them.

Bjob90000000 about Dot Period & Fertility Tracker, v1.2.1