Lux Meter: Light Measurement
Foot-Candle, EV & Brightness
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
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
FULL ACCESS
Unlock unlimited history, comparison charts, CSV and PDF export, calibration, the standards guide and location tagging with a weekly or yearly plan, or pay once for lifetime access.
PRIVATE BY DESIGN
Everything stays on your device. No account, no cloud, no tracking.
Point, measure and get the light data you need today.
Terms of Use: https://web-levi.web.app/terms
Privacy Policy: https://web-levi.web.app/privacy-policy
Support: tphuc.work@gmail.com
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes and performance improvements.
Subscriptions
In-App Purchases
The developer, Phuc Pham, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Phuc Pham
- Size
- 6.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lamp & Bulb Check Weekly $2.99
- Studio Photometer Yearly $14.99
- Illumination Pro One-Time $29.99
- Workspace Check Weekly $2.99
- Illuminance Log Yearly $14.99
- Copyright
- © 2026 Phuc Pham