Screens are small, apps are big, and life as we know it is on its head again. In a world that's increasingly social and open, mobile apps play a vital role, and have changed the focus from what's on the Web, to the apps on our mobile device. Mobile apps are no longer an option, they're an imperative. You need a mobile app, but where do you start?
Native apps are specific to a given mobile platform (iOS or Android) using the development tools and language that the respective platform supports (e.g., Xcode and Objective-C with iOS, Eclipse and Java with Android). Native apps look and perform the best.
Hybrid apps make it possible to embed HTML5 apps inside a thin native container, combining the best (and worst) elements of native and HTML5 apps.