Square changes its mobile payment app to Pay With Square, adds support for Android
Android users, getting the tab for the first time, will have the same functions as the iOS version. The Android app also offers automatic tab setup at a store as soon as you get within a certain distance of it. Neither the iOS or Android app is optimized for anything but the small screens on a smartphone. While optimized for iOS 5, the app will work on Apple iPhones running iOS 4.1 or later. and Android users need to be running Android 2.2 or later.
source: AppStore, GooglePlay via Electronista