WellCube was developed as a compact, connected air purifier designed for modern offices. Built with eight integrated sensors, air quality, temperature, humidity, occupancy, light, and noise levels are monitored to reveal the hidden conditions of indoor spaces. High-performance filtration removes 99.97% of particles at 0.3 microns. A quiet, tabletop form makes it suitable for desks and shared areas alike. Interchangeable fabric covers allow filters to be accessed easily while helping the device blend into different interiors, supporting healthier workplaces through clear, localized insights.