Microsoft Word is, simply put, the alpha and omega of word processing, and one of the key apps in Microsoft Office 365. You'll find it on every kind of computer in every kind of setting, and now it's available for free on Android. Word plugs into Microsoft's cloud infrastructure to keep your documents in order, but its main selling point is that this really is Word. What you make on your phone will look exactly the same on the desktop. For the worker on the go, it's essential. Android App
The Amazon-owned ComiXology —the iTunes of digital comics—offers a near-perfect combination of store and comic book reader in its wonderful Comics app. The free app transforms your Android smartphone or tablet into a digital long box that houses and syncs your purchases across multiple devices. Even better, the new Comixology Unlimited service lets you devour an ever-expanding catalog of titles for just $5.99 per month. Once you have the app downloaded, you should make sure to read our feature on digital comic books you should read right now.
Google Opinion Rewards is appropriately named. Google sends you surveys that ask you about places you've visited recently and you get Google Play Store credit for your participation. Polls don't come in very often, but you can increase your chances of receiving more, by enabling your location and answering surveys quickly and honestly when they do arrive. It's not going to earn you a ton of store credit, but it's enough to purchase an app or an album every so often. To add some perspective, one of our editors has earned about $64 since installing the app in late 2013. Droid App