The main advantage of using a hybrid app versus a native app lies in its development efficiency and cross-platform compatibility. Hybrid apps are built using web technologies like HTML, CSS, and JavaScript, allowing them to run on multiple operating systems with a single codebase. This significantly reduces development time and costs compared to native apps, which require separate coding for each platform, such as Android and iOS. Additionally, hybrid apps can access device features and provide similar functionality, making them a flexible choice for businesses aiming to reach a broader audience.