You make the Observation the app does the rest. AutoChart uses the three most important signs for determining fertility: Bleeding, Lubrication, and Cervical Mucus. By making accurate observations daily, you will ensure an accurate status every time. Organic family planning is 99% effective in avoiding pregnancy and extremely successful in both achieving pregnancy or detecting problems that might be affecting your fertility. Best of all, once you are registered, you can record your observations from your smart phone or computer.