Lux Meter: Light Measurement

Turn your iPhone into a professional light meter. Measure lux, foot-candles, and EV instantly — with history, GPS tagging, and AI analysis.

Turn your iPhone camera into a pocket light meter and read illuminance in lux and foot-candles in real time — perfect for checking workspaces, grow lights, photo sets, and lighting-standard compliance with real numbers instead of guesswork.

Please note: readings are a consumer-grade estimate from your camera, not a calibrated laboratory instrument.

WHAT YOU CAN DO • Live readings — point the camera and see lux (lx), foot-candles (fc) and Exposure Value (EV) update instantly • Record sessions — capture average, maximum and minimum light over any period • History and charts — every session is saved with a graph, stats and your own notes • Compare — overlay two measurements side by side to check before/after conditions • Standards guide — measure against ISO, IEC and OSHA recommended levels for offices, workshops and classrooms • Calibrate — run the wizard against a known value for a device-specific factor • Export — save any session as CSV or PDF and share it anywhere

HOW IT WORKS

1. Point your camera at the surface you want to measure
2. Read the live lux or foot-candle value
3. Lock, record or export the result

SUBSCRIPTION REQUIRED Lux Meter requires a paid plan to use — there is no free tier. After a short setup you choose one of three options: a weekly subscription, a yearly subscription, or a one-time Lifetime purchase. All of them include everything above: live readings, unlimited history, comparison charts, CSV and PDF export, calibration, the standards guide and location tagging. The weekly and yearly plans renew automatically until cancelled; cancel any time in your Apple Account settings.

PRIVATE BY DESIGN Everything stays on your device. No account, no cloud, no tracking.

Point, measure and get the light data you need today.

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