Lux Light Meter: Illuminance
Exposure Meter & ND Calculator
About
Measure ambient light levels with your iPhone. Get real-time lux and foot-candle readings, with specialized modes for photography and plant care. Track light history and calibrate for accuracy.
What's New in Lux Light Meter
1.2
August 10, 2026
1. Improved measurement mode switching for a smoother experience. 2. Photography mode now includes subject switching, with Standard and Artwork shooting modes. 3. Enhanced accessibility: when VoiceOver is on, live meter readings can be announced aloud. If you have any questions, please contact us: support@xzonesoft.com If you enjoy this update, we’d love your rating and feedback. Your support helps us keep refining the app.
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Annual Subscription
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In-App Purchases
$4.99
Lifetime Access
One-time purchase, lifetime access.
Developer apps
FAQ
What is Lux Light Meter used for?
Lux Light Meter helps you measure ambient light levels in lux or foot-candles. It offers specialized modes for photography to guide exposure settings and for plant care to estimate light needs.
Does Lux Light Meter work offline?
Yes, the core ambient light metering functionality of Lux Light Meter works offline. This allows you to take readings without an internet connection.
Can I calibrate Lux Light Meter?
Yes, Lux Light Meter offers optional calibration to fine-tune readings against a trusted meter. Pro users can save separate calibration factors for both front and rear cameras.
What are the subscription options for Lux Light Meter?
Lux Light Meter offers weekly and yearly subscriptions, as well as a lifetime purchase option. Payments are charged to your Apple ID, and subscriptions renew automatically unless managed in account settings.
How does Lux Light Meter handle my data?
Lux Light Meter is privacy-friendly, storing your measurements directly on your device. You can switch between lux and foot-candle units as needed.
What devices is Lux Light Meter compatible with?
Lux Light Meter is designed for iPhone and iPad devices. It requires camera access to function.
How often is Lux Light Meter updated?
The latest version of Lux Light Meter is 1.1, last updated on July 24, 2026. Updates typically include improvements and new features based on user feedback.
What is the age rating for Lux Light Meter?
Lux Light Meter has an age rating of 4+, making it suitable for a wide range of users. Its utility features are designed for practical application.