What kind of Apps Can Developed in SharePoint 2013?

The Code for an app runs in different places, depending on where your app is hosted.They never run in the context of SharePoint Server, but they will run in the context of the browser or in the context of the hosted platform.You Can Develop three kind of Apps –

1. SharePoint-hosted apps
2. Provider-hosted and autohosted apps – In the cloud
3. Apps that have a mix of Components in SharePoint and in the cloud