Live meter
Lux or foot-candles with the ± band beside the number, a 60-second live chart, and the average, minimum and maximum. Optional smoothing by moving average or Kalman filter.
Every reading comes with its ± error band, a clear 'not calibrated' warning until you calibrate, and the source it came from. A phone is not a laboratory instrument, and Luxwise is clear about that.
Lux or foot-candles with the ± band beside the number, a 60-second live chart, and the average, minimum and maximum. Optional smoothing by moving average or Kalman filter.
An approximate colour temperature in kelvin, labelled warm, neutral or cool, for quick comparisons.
Guided one- or two-point calibration beside a reference meter, with a profile for each phone and meter. The active profile and its date are printed on every export.
Log every 100 ms, 1 s, 10 s or 1 minute. On Android, Luxwise reads the light sensor directly and keeps logging with the screen off, and Pro adds all-day logging with CSV export.
With Pro, enter the room size and Luxwise lays out the measuring grid and guides you point by point, then gives the average, minimum, maximum and uniformity U₀ with a heat map.
With Pro, estimate PPFD and daily light integral (DLI) from lux for sunlight, white LED, fluorescent, HPS, metal halide and red/blue grow lights.
Room surveys compare your results with reference values commonly cited from EN 12464-1:2021, such as 500 lx and U₀ 0.60 for offices. They are a guide, never a certification.
Pro builds a report with your project, site, logo and notes, the results, heat map, charts, every point and a signature line. It states how the readings were taken and how uncertain they are, with no fake 'certified' stamps.
Readings, logs, surveys and reports stay on your phone, with no account and no analytics. Luxwise Pro is one payment with no subscription, and removes the ads.