Hybrid apps are popular because they allow developers to write code for a mobile app once and still accommodate multiple platforms. Because hybrid apps add an extra layer between the source code and the target platform, they may perform slightly slower than native or web versions of the same app. Hybrid applications features include: The ability to function whether or not the device is connected. Integration with the mobile device's file system. Integration with Web-based services. An embedded browser to improve access to dynamic online content.