Bloodays is a calendar intended for adult. The calendar shows the best time for conception and the best time for safe love. The program helps you: 1. to use natural (rhythm) contraception method 2. to plan your life according your physiology 3. to choose the gender of your future baby 4. to calculate days of birth and days of conception. Bloodays shows all these in a one year calendar. You can print this calendar and use it anywhere.