Periodic Calendar provides support for sympto-thermal method which has the highest reliability in fertility periods prediction. User can choose any subset of the features to be used or even fall to the generic calendar method (which if used alone is very unreliable).
Authors of the Periodic Calendar still insist on not being an equal substitute to the fertility planning consultants or doctors. Before using this application please talk to your doctor or read a good book on the subject.
THIS PROGRAM PREDICTIONS IN NO WAY CAN BE USED AS THE FINAL. THERE ARE NO PREDICTION METHODS WHICH PROVIDE 100% RELIABILITY.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.