Digital Period Tracker, Period Logbook, PMS Symptom Menstrual Cycle Calendar, Menstrual Log, Goodnotes iPad Android Planner, Digital JournalThis digital logbook is a PDF file that works with any PDF annotation apps. Also, the hyperlinked tabs completely function on GoodNotes, Notability, or Noteshelf (or other apps that are supported).What's Inside The Logbook:- Digital period tracker with many sections such as period key, symptom, bleeding, stress level, mood, exercise, meal, doctor visit, note