We Tested ROLL Beauty for 19 Hours and Found Nine Bugs
Built for Shipaton 2026, ROLL Beauty passed its simulator tests before a 19-hour real-world session exposed nine computer-vision bugs.
In an effort to rigorously test their app ROLL Beauty, developers Nao and Ryu subjected the software to 19 hours of intensive scrutiny. The app allows users to rotate their smartphone to capture a 360-degree view of their hair, making it easier for hairstylists to provide feedback. The team attracted testers with long hair from Kobe University’s Entrepreneurship Club, as long hair presented the most challenging scenario for the app’s computer vision functionality.
The testers explored various lighting conditions, distances, and rotation speeds to uncover as many bugs as possible. By intentionally creating worst-case conditions and following a strict 7-step iteration loop, the team identified nine bugs that would have otherwise gone unnoticed.
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