Wunderlist is a task management app that will blow any other app you currently may be using out of the water. Aside from having a beautiful and and easy to use UI, Wunderlist does it all. You can make lists to organize your own tasks, and then specify if you want to be reminded with an email and/or push notification. Since you can synchronize all of your devices, you will never be without your personal to-do list. You can also share events and lists with friends, even if they don’t have Wunderlist. Oh, and did I mention it is free? It is definitely worth a gander.