You can download wx-nfp 0.8 from our software library for free. This free software was originally created by Grzegorz Szura. The program relates to Home & Hobby Tools.
From the developer:
wx-nfp is a free, cross-platform application to store the observations of menstrual cycle according to Natural Family Planning rules.
You may want to check out more software, such as Luxembourg3D, SimQuest or Module 02 Beginning Kinematics, which might be related to wx-nfp.