We all have busy lives. We deal with so many information and tasks every day that we are bound to forget some. In such a situation, the importance of writing things down can't be stressed enough. Sure, some of us can get by with keeping everything in our heads. That doesn't work for everyone though. To-do apps are the answer to this problem. Perform a simple search on the Google play store and you'll see that there's no shortage of to-do apps. Here are three such Android apps that may help you in accomplishing your goals.