The first thing I thought about when approaching this app design was usability. It had to be completely functional, simple, and intuitive without overly relying on UI design. I brainstormed several ways to approach element sizing, display and placement. I then performed extensive user and AB testing with the app in it's wireframed state, asking users to complete a checklist of tasks. Only once it was intuitive enough to be flawless did I move into design.