ROS-Mobile is an Android application designed for dynamic control and visualization of mobile robotic system operated by the Robot Operating System (ROS). The application uses ROS nodes initializing publisher and subscriber with standard ROS messages. The overall code architecture pattern is Model View Model View ViewModel, which stabilizes the application and makes it highly customizable. You can download the application from the Google Playstore or built it from source by downloading the source code from the GitHub page.
On the GitHub Page, you will find a detailed README with installing instructions. At the GitHub Wiki you find notes to tutorials, example applications and many more.