PollenNav navigation app maps lower-pollen routes in the cityMost navigation apps optimize for time, distance, or traffic. PollenNav asks a different question: which route will least likely leave you struggling to breathe? Shi spent a stretch of 2021 dismissing her own allergy symptoms until they escalated into asthma, coughing through nights she couldn’t sleep. Where conventional pollen forecasts stop at a single city-wide number, PollenNav works at the scale people actually move through: the block. The work has been recognized with the iF Design Award 2026, the Red Dot Award: Brands & Communication Design, a Silver at the New York Product Design Award, and the European Product Design Award.