LUX Meter - Light Meter
Illuminance for photo & plants
About
This app measures ambient light levels in lux or foot-candles using your iPhone camera. It provides instant feedback on whether a space is too dim, comfortable, or bright enough for various tasks and offers calibration options.
What's New in LUX Meter
1.1.4
July 12, 2026
LUX Meter now speaks 34 languages — the whole app, including the guide and every lighting target. Arabic and Hebrew now lay out correctly right to left, with the light scale running in the right direction.
MoreFAQ
What is LUX Meter used for?
LUX Meter is used to measure ambient light levels in lux or foot-candles using your iPhone's camera. It helps you quickly check if a space is too dim, comfortable, or bright enough for tasks like reading, photography, or plant care.
Does LUX Meter have ads?
No, LUX Meter is ad-free. The app explicitly states it contains no ads, ensuring a distraction-free user experience for light measurement.
Is LUX Meter accurate for professional measurements?
LUX Meter provides estimates from camera exposure, which are great for quick checks and comparisons. For regulated, safety-critical, or professional compliance measurements, it is recommended to use a certified lux meter.
Can LUX Meter be calibrated?
Yes, LUX Meter offers calibration against one trusted lux value. This feature allows you to fine-tune the readings for greater accuracy based on a known light source.
What devices does LUX Meter support?
LUX Meter is currently supported on iPhones. It utilizes the iPhone camera for its light metering functionality.
How often is LUX Meter updated?
LUX Meter was last updated on July 4, 2026, with version 1.1.3. This indicates a recent update, suggesting ongoing development and support for the application.
Does LUX Meter require an account?
No, LUX Meter does not require an account. It is designed for privacy, with no account creation, tracking, or photo storage needed to use its features.
What are the lighting target presets in LUX Meter?
LUX Meter includes lighting target presets for various tasks like reading, office work, kitchen use, and plant care. It provides live in-range feedback as you move your phone, indicating if the current light level meets the selected target.