Seoul University Student's 'Sun-Shunning' Navigation App Goes Viral in South Korea

South Korea is experiencing a rare and severe heatwave, with temperatures in many areas exceeding 39 degrees Celsius (102 Fahrenheit) and approaching 40 degrees in some regions. This extreme heat has already claimed over 10 lives.

Amidst the sweltering conditions, a navigation app designed to help pedestrians find the coolest routes has become a sensation. Dubbed 'Shadow Path' (그늘로：뚜벅의 여름길), the app was developed by a 23-year-old mathematics education student at Seoul National University.

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Due to the recent extreme heat in South Korea, a developer has specially created a navigation app for 'avoiding the sun.'

The app's core function is to calculate walking routes that maximize shade. Users input their destination and desired travel time, and the system analyzes the current sun angle, the height and shape of surrounding buildings, and the positions of roadside trees. It then generates a path designed to keep users in the shade as much as possible.

'Shadow Path' offers highly detailed planning. It not only identifies the best shaded walking routes but also provides advice for public transport. For bus rides, it suggests which side to sit on to avoid direct sunlight. For subway travel during above-ground segments, it advises on seating to keep the sun at one's back. The app even considers avoiding strenuous uphill climbs or stairs if shaded alternatives exist.

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The app can precisely plan a walking route with the 'most shade.'

Users can visualize the dynamic changes in building and tree shadows at different times of the day directly on the map. The app's ingenuity and utility have propelled it to the top of the navigation category on the South Korean App Store. The student developer reportedly created the app out of personal frustration with being constantly exposed to the harsh sun during his daily commute, hoping to benefit others facing similar discomfort.

Despite requiring users to switch their App Store region to South Korea for download, 'Shadow Path' features a fully integrated Traditional Chinese interface, making it accessible to Taiwanese travelers who may not understand Korean.

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The developer, a 23-year-old student at Seoul National University, was inspired by his own daily commute and the discomfort of being exposed to the sun.