Arno Welzel
Arno Welzel published 1 application on Google Play, 45 people rated this app with an average rating of 3.58!
PeriodicalThis application calculates the fertile days according to Knaus-Ogino.WARNING: It is not recommended to use this calendar to avoid pregnancy! There are more accurate methods, like measuring the basal body temperature.The data can be backed up on a memory.
Free App