Android apps are bits of software that run on the Android operating system. They can be installed on Android TVs, tablets, and phones. They’re extremely efficient in using the camera, touchscreen, and GPS functions of the device. The installation of many apps on an Android device can affect the battery’s performance and life.

Understanding the Android platform and its design principles is crucial in the creation of Android apps. It also requires a well-designed app architecture, which separates UI- and OS-related codes into components that share duties. The system can trigger these components in asynchronous fashion using a broadcast mechanism that is activated by the intents.

Kotlin is becoming more popular as a language used in Android development. Both languages are supported by Android SDK. On the web, there’s an enormous community of developers who can assist newcomers to understand the language and troubleshoot any problems.

The Android OS itself is divided into layers, with the application layer consisting of the default apps that ship with the operating system along with the specialized apps that are bundled with a specific device, such as the phone dialer or music player. The Android app layer also comes with custom firmwares, like what is a vpn virtual private network CyanogenMod and OMFGB that can be installed on specific devices to modify their functionality.

Another reason that stops certain apps from working is compatibility. If an application is created for the US but is not compatible with your European device, it will not run and will appear in the Play Store as “incompatible”.