LuxMeter - Light & EV Meter
Light Meter & Lux Measurement
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Measure light anywhere with your iPhone camera. Instant lux, fc, and EV readings with session history.
LuxMeter turns your iPhone camera into a precise light meter, giving you instant illuminance readings in lux, foot-candles, or exposure value (EV). Whether you are checking lighting conditions for work, photography, or plant care, LuxMeter delivers real-time measurements derived directly from your camera's exposure metadata using the industry-standard APEX formula.
The live gauge updates continuously as you move the camera, and the automatic brightness category — from Moonlight to Direct Sun — tells you at a glance what kind of environment you are in. Hold any reading to freeze the display and share it, or save a session to keep a timestamped log of your measurements.
Key features:
- Real-time lux readings powered by camera exposure metadata
- Displays lux, foot-candles (fc), and exposure value (EV)
- Animated gauge with live min, avg, and max statistics
- Hold mode to freeze and share a reading
- Session history with bar chart and inline notes
- EV calibration offset to match a reference meter
- Built-in lux reference table covering natural light, office, home, photography, and plant growth
- Clean, distraction-free design with dark mode support
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Linh Phan Nhat Khanh, 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
- Linh Phan Nhat Khanh
- Size
- 584.7 KB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 PNKL