Lux Meter

Turn your phone into a simple light meter. Lux Meter uses your device’s ambient light sensor to measure the light around you in real time. Whether you’re checking the lighting in a room, finding a good spot for a houseplant, or simply curious about how bright your surroundings are, Lux Meter gives you a clear reading without the clutter. MEASURE LIGHT See the current light level instantly in lux, with a clean display designed to be readable at a glance. Track minimum, average and maximum readings as the light changes, or use Hold to freeze a measurement so you can take a closer look. PLANT MODE Not sure what a lux reading means for your plants? Switch to Plant Mode and Lux Meter turns the measurement into simple, easy-to-understand light levels: • Very Low • Low Light • Medium Light • Bright Indirect • Very Bright • Direct Sun Quickly understand the light in different spots around your home and find locations that may be better suited to your plants. SIMPLE BY DESIGN No complicated dashboards. No account. No unnecessary features. Just open the app and measure. • Real-time lux measurements • Simple plant light guidance • Minimum, average and maximum readings • Hold measurements • Works offline • No account required • No ads • No subscription Lux Meter is designed to be a quick, simple tool you can reach for whenever you want to understand the light around you. Note: Measurements depend on the ambient light sensor in your device. Sensor availability, range and accuracy vary between phones. Lux Meter should not be used as a replacement for calibrated professional measurement equipment.