Micro-interactions are the difference between a good app, and a great one. Motion is a hard concept to get right. Overuse can cause confusion or disorientation, no motion can leave a user bored or make them lose their place within you app.
I'm versed in material design and apple iOS design standards, and create interactions that fit into the constraints of each OS. I'm also able to create interactions for the web, although those are more limiting than native environments.
I will provide you with gifs of the interactions, movie files, and the original prinicple source file for you to reference in development. I work with developers of all types on a daily basis and can give them what they need to be successful.