Mobile Design Inspiration is a feed with the best mobile interfaces, app icons and other iPhone iPad and Apple Watch by top UX designers. Curated by Denis Pakhaliuk CEO at Ramotion - UX Design Agency.
Main menu interaction / animation - Main menu (indicate new activity using circles orbiting) - Conversation - Hello - Add / remove user
Dribbble - Menu Interaction by Barthelemy Chalvet (via AgenceMe)
Coded version Here's a simple add to cart interaction I prototyped quickly today with some lightweight html and jQuery. More to come :) see it in action source code