Rocket App UI Kit
This is an impressive collection of mobile app mockups, designed around this fictional "Rocket App". It's made up of several different interface screens, including a news feed, follow/following screen, login page, home screen, and a couple of logo mockups. This is a great way to learn more from a fantastic example of interface design, or use the graphics as a starting point for your own app mockup!
About Rocket App UI Kit
A selection of other designs you might like to explore, based on Rocket App UI Kit: