https://www.flinto.com/p/76993fb9
I find that the process of making the digital prototype is very helpful to break down each interaction and do detailed analysis. It helps to refine the interactive logic before start writing actual codes. Also, showing this prototype on real phone is surprisingly real for most people. Users’ reaction are more natural than facing paper prototypes. When I asked specific questions to a programmer by showing this prototype, he quickly understood the effects I want to achieve instead of guessing the animation from wireframes.