There are lots of ways to pay for things with your phone. But Venmo has a smart mixture of clean design, ease of use, and social functions that give it an edge. It doesn't do much, but it does let you easily send and receive payments from friends. And unlike other payment systems, it has momentum. It's usually the app people ask about when the group is splitting up the check.

You’ll find a huge repository of free apps here for various platforms including Android. GetJar is fairly basic, but apps are divided into categories and sub-categories within the store to make it easier to find what you want. You’ll also find likes or dislikes and comments on each app from users. GetJar can also connect with Facebook. On the downside, you will encounter sponsored recommendations, but they are clearly marked. Android App

Everyone needs to file their taxes every year. Most people will probably have an easier time using dedicated tax software (and some might still enjoy preparing them by hand), but more ambitions filers or those with simple tax returns can get away with using a mobile app. Intuit's TurboTax Tax Return App is the best one we reviewed this year. Among its top features are an excellent user interface, support for all major tax forms, and innovative help options. If you get stuck at any point, you can just open up the Virtual Assistant, which keeps a running dialogue of the help topics you searched for, or use SmartLook to connect to a tax expert via video chat. Droid App