Contus is an international IT company that has offices in the United States of America and India. This firm employs talented computer programmers who are fluent in Java, which supports Android apps and other complex tools on the internet. Contus knows how to properly deploy Java on the back end of a custom app that is optimized for the Android platform. The user interface (UI) of an Android app has to enable smooth navigation of menus and other presentations. With the touch of the screen, a user should have an easy time opening or closing specific features in an Android app. Contus runs various debugging processes to detect any glitches in the UI of custom apps that are refined for the Android OS. Once the entire source code is properly checked, it's important to update an app with new plugins or extensions that can improve the experience for the end users.