* Period Tracker 3D - calendar of menstruations.
* Two kinds of the calendar - the week begins from Sunday / Monday (selector S/M).
* Keeps history of menstrual cycles.
* You can add a note to each cycle.
* The application will make the forecast monthly for a year using a method of 'weight factors'.
* When setting the cycle start date a selector activates to set the duration of menstruation (1 - 10 days).
* Convenient schedule of cycle times.
* All your data is saved in simple text file - therefore you can securely store it in any place.

* Mark days of the beginning monthly.
* More marks - more accurate the forecast is.
* Choose a calendar day of the month, set selector to position 'START'. The program automatically draws red daisies (during menstruation).
* After the second mark, the program starts automatically calculating the estimated days of menstruation and marking them with white daisies.
* The calendar will calculate your average menstrual cycle and day of a cycle.