Lux Meter: Light Meter

Lux Meter is a light meter, illuminance meter, and lux measurement tool for Android. Turn your phone into a pocket photometer that reads ambient light in lux and foot-candles in real time, with min/avg/max tracking and a calibration offset for reliable readings. Whether you are setting up a photo shoot, dialing in a grow light, or checking that a workspace meets recommended light levels, Lux Meter gives you a fast, clear measurement anywhere. ▶ MAIN FEATURES • Illuminance in lux and foot-candles (fc) • Real-time light level from the ambient light sensor • Min / avg / max tracking while you measure • Calibration offset for accurate, repeatable readings • Light-level recommendations for rooms, offices, and plants • Hold to freeze the current reading • Measurement history to compare locations • Large, easy-to-read display • Dark mode • Works fully offline, no account or sign-up ▶ HOW TO USE 1. Open Lux Meter and point the ambient light sensor at the light. 2. Read the illuminance value in lux (or switch to foot-candles). 3. Watch min, avg, and max update live as you move. 4. Tap Hold to freeze the current reading. 5. Set a calibration offset to match a known meter. ▶ WHO USES IT • Photographers & videographers checking lighting • Plant & grow-light growers dialing in light levels • Office & workspace safety and ergonomics checks • Interior & home lighting design • Electricians verifying installations • Students & teachers in science class Lux Meter uses the ambient light sensor built into your phone. Sensor placement and cover glass vary by device, so readings are approximate; for relative or repeatable readings, calibrate against a known light meter using the calibration offset. Download Lux Meter and measure the light around you in lux and foot-candles today.

New Plant check on the meter: pick your plant's light group, hold the phone at leaf height for 5 s and see if the spot is darker than, within or brighter than the typical range right now; save it by name to History. An empty History now shows "Save · 420 lx" while the meter runs. A tip shows the light sensor is at the top edge on the screen side. Export CSV adds note and plant columns.