Pytomation has 2 Android interfaces to choose from: pyHomeRemote, and Home Control.
The Home Control Application is an Apache Cordova applications, based on the main web app. Apache Cordova can compile the app for various platforms; including Android, iOS, Blackberry, Windows Phone 8, Windows 8, Amazon Fire OS, Ubuntu, Firefox OS, and Tizen.
Currently, only an Android app has been compiled (available in the links below with more information at Google Groups - HTML5 App Thread). The Android app includes everything the main web app includes, plus “Voice Commands”.
To utilize the “Voice Commands” in the Home Control Android App, slide the device list down until it tells you to “Release for Voice Command”, and then release.
pyHomeRemote looks similar to the Home Control App, in it's device layout. It's major advantage is it's a fully native Android App, so it loads much faster when it's opened. However, it's missing the slider control, custom thermostat control, and voice commands.