Name a few sites to get app templates and mock designs.

1

UI8

#Design Tools #Photos & Graphics #Image Marketplace 12 social mentions

2

Iconscout

#Web Icons #Vector Icons #Icon Fonts 8 social mentions

3

Previewed

For mocks ups, I've recently stumbled upon previewed app. It has many templates to get you started quickly.

#Design Tools #Mockups #Prototyping 18 social mentions