This application is designed to calculate the dates of your next menstrual period. Simply input the first date of your last period, the days between two periods and the duration of your period. The application will show you when your next period will come
PLEASE, DOWNLOAD PERIOD CALCULATOR FOR BLACKBERRY 8820 4.2 DIRECTLY FROM YOUR MOBILE DEVICE BY SCANNING BARCODE OR WE WILL SEND YOU LINK TO YOUR MOBILE EMAIL