A clear direction
After establishing the metaphor, we explored a handful of design directions, ranging from literal to representative, and flat to dimensional – ensuring that the client had a comprehensive view of possibilities. After many iterations working closely with the internal team, we selected an approach that visualized the particles of breath being sucked into the measuring device.
The result is a design direction that features a gentle animation of particles to mimic the activity occurring in the device. The results screen shows the same particles in a way that signals to the user the quality of their breath, while being sensitive to their privacy.