Well only if you are a cis gender woman with a functional uterus.
The app averages the last three periods to predict your next one, and you can add notes to track moods, symptoms, and even written notes. If you are tracking periods for ovulation, Period Tracker also tells you fertile days and allows you to track daily temperatures.
Period tracker is a full service app if you have periods.
If you don’t have periods or don’t wish to keep track of the ones you do have feel free to ignore this post. I will be back to my normal, compelling posts when this period stops kicking my ass.