I have been looking for an all in one tracker app and stumbled upon "mycycles". Not only can you track your monthly cycle it runs an analysis of your cycles and will even remind you when you aunt flow is on the way! Best part is you can track everything else as well on a daily basis, physical symptoms, medications you take, MOOD, etc, and even input your own notes.....love it its great for when you go to the doc and forget this and that.....and it is free....