With the continual growth of the use of smartphones and tablets, there is a need for apps for different things. This could be for games, productivity, music, drawing, and many many other things. There are thousands of apps in the Apple app store and the Android market. Combine this with the billions of downloads for these apps, and you have proof to show how big apps are for today’s technology. There are many apps that are used such as Facebook and Angry Birds that are widely known and downloaded. While there are many apps that are developed, many are taken down from the app store or Android market for various reasons. There are also apps that are downloaded but are only used a couple of times or even once.