4 Period Tracker
If you are looking for the app to track your red weeks only, the Period Tracker app is all you need. It will help you plan your vacations, dates and trips so that your period won’t ruin your plans. The app shows the date of when you may start your period as well as your fertility days. It also helps to keep track of health symptoms, daily moods, weight, notes, and even weather. The app is free, though it has an upgrade option.
