This app is developed based on a website called CAPPTIVATE.co. It shows a lots of UI design that may inspire you.
Description in Appstore:
The Capptivate.co app makes it easy to view the complete collection of app animation videos on your iPhone – and now you can drag your finger across the screen to scrub through the animation at the speed you want to see it!
– Tap a preview video to watch it loop.
– Drag your finger across the screen to scrub through the animation.
– Tap on the name of the app to download it without leaving Capptivate.co!
– Search by app name, animation pattern, or component.
– Share via Twitter, Facebook, email, SMS and more!
Find download Here!
Enjoy!