Flicker Meter for Light - PWM is a utility application designed for iPhone users to assess flickering in LED lights, screens, and fluorescent tubes. This app addresses the often unnoticed flickering that can lead to eye strain, headaches, and fatigue. By measuring the flickering percentage, users can identify which light sources are problematic and which are flicker-free, enhancing their visual comfort and health.

The application requires users to position their iPhone camera towards a stable, evenly illuminated surface to capture accurate measurements. The flickering percentage indicates the variability in light output, with values ranging from 0% (steady light) to nearly 100% (complete flickering). As long as the device remains still during the measurement process, accuracy is generally within five percentage points, making it a reliable tool for those sensitive to light fluctuations.