> 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

View period history and track future periods dates.

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.

![](https://874405729-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ls63S8T9EaOXcClR_pO%2Fuploads%2FKTBbSELd2ToWu6HFV36D%2F%E4%BD%BF%E7%94%A8%E6%8C%87%E5%8D%972.0-%E8%8B%B1%E6%96%87%E7%89%88-15.jpg?alt=media\&token=e7110586-bf4b-4317-bcef-6b24a651bab2)