Zumm Lite application can help you to calculate methods of determining infertile days or safe period to avoid pregnancy by natural birth control methods and help you to calculate your ovulation date.
World Health Organization (WHO) data shows that approximately 80% of menstrual cycles ranges from 26 to 32 days (average 28 days) , and this safe period calculation application is adjusted to reflect these data.
This application works best for women with a regular menstrual cycle.
Note: Check with your doctor about the effectiveness of natural family planning methods. Expected perfect use failure rate for this method is 3 - 4% per year.
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Supported operating systems:
Windows 10 Mobile, Windows Phone 7, Windows Phone 8
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