Three ways to measure
Flat
Phone face up, a sheet of printer paper over the front camera.
Card
The back camera looks at a sheet of white paper.
Quick
No paper. Fast, and rough.
Honest numbers
Estimate ยท not calibrated
Every reading is labelled as an estimate until you calibrate.
One-tap calibration if you have a meter.
Calibrate your own paper.
Below rangeAbove range
Shown when the light is out of reach, instead of an invented number.
Refuses to guess PPFD for purple grow lights.
How accurate is Luxwise?Plants
Foot-candle ranges from university extension services.
PPFD and daily light integral estimates for sunlight and common grow lights.
DLI loggerPro
Desks, rooms, bedrooms, light boxes
Reference levels, each with its source.
Room survey with PDFPro
No account. No server. No tracking.
Photographers
EVApertureShutterISOND
Free forever for measuring
No battery, no trial tricks, no ads.
Luxwise Pro
US$9.99once
One-time purchase with Family Sharing.
Coming soon