YouClap - Challenge and be challenged by friends and brands.
UX Archive Animated - iOS apps animated user flows
Finger Tap Challenge - Finger Tap Challenge is a simple challenge game that involves two players who will have to tap on the screen as fast as they can to win the challenge from the opponent.
UI Patterns - Level up with interactive mobile design patterns
Spinnner - Challenge your friends to a spin-off (literally)
Page Flows - User flow design inspiration for mobile & desktop