I am new to SharePoint 2013 Apps and I have following confusion.
Standard SharePoint WebPart can be added to WebPart Page and you can modify the content, appearance, and behavior of pages of a SharePoint site by using a browser... SharePoint WebPart
Same way, can we do like this using SharePoint App ? means Is SharePoint App itself a WebPart? If no then how can we create a WebPart using SharePoint App?