3. Period plus
So, have you ever lost track of your period? Have you ever been asked exactly when your last period was and what you felt like? This awesome app actually keeps track of your period, tells you when you are projected to start your next period and you can input your symptoms! How cool is that? I use this all the time! I actually love the way that you can look back and see not just what you experienced, but also how long your period was!