> For the complete documentation index, see [llms.txt](https://en.faq.hearty.me/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://en.faq.hearty.me/tutorial/periods.md).

# · Period Tracker

Tap the moon icon on the menu. (Click the house icon to open the menu if you're using a phone first.) Input your latest period dates to calculate and predict the start date of your next period.

![](/files/0tK1FuqChquwSbkl7KBl)