Measure ambient light in various units like lux, foot-candles, and EV using your device's camera. It offers specialized modes for plant lighting, indoor and outdoor environments, and photography, with historical data and export options.
1.0.41
November 8, 2026
New Tools tab with a window tint check: aim the back camera out through the open window, then through the closed glass with the phone flat on it, and Lux Light Meter estimates how much light the glass lets through (VLT %). Standard mode repeats the pair and flags moving clouds, shaking and a changed angle; compare with the minimum % you enter and save the result per window. Reference only, not an official tint meter. History buttons are easier to tap.
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Lux Light Meter uses your device's camera to measure ambient light in units like lux, foot-candles, and EV. It's useful for photography, plant lighting assessment, and general light level checks.
Yes, Lux Light Meter contains advertisements. As a free utility app, ads help support its development and availability.
Lux Light Meter estimates PPFD and DLI for plant growth based on spectrum-specific light sources. These are intended as guidance for light placement, not as precise lab data from a calibrated PAR sensor.
Yes, Lux Light Meter automatically saves every reading. You can export all your data as a CSV file or share individual readings as images.
Lux Light Meter is currently available for iPhone devices. It runs on iOS and is designed to utilize the device's camera for measurements.
The latest version of Lux Light Meter is 1.0.41, last updated on November 8, 2026. Updates typically include improvements and new features based on user feedback and device compatibility.
Lux Light Meter has an age rating of 17+. This rating is determined by app store guidelines and may reflect the app's complexity or the potential for misuse of measurement data.
Yes, Lux Light Meter includes a calibration factor. You can use this to scale every reading by a multiplier to match a reference meter you trust for more precise absolute numbers.
