Lux Light Meter: Illuminance
Exposure Meter & ND Calculator
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Lux Light Meter: Illuminance
A practical lux and illuminance meter for iPhone. Measure ambient light in seconds, check if a room is bright enough for study, work, or home use, and get helpful exposure and plant-lighting guidance when you need it. Core metering works offline.
Key Features:
Ambient light metering - Live lux / fc readings with scene targets that tell you if the light is too dim, about right, or too bright — plus simple tips to adjust
Photography mode (Pro) - Aperture- or shutter-priority suggestions with ISO and exposure compensation so you can dial in exposure faster
Plant mode (Pro) - Estimate PPFD and DLI for common houseplants, with light source and daily photoperiod options
Continuous measure & history - Save single readings, track how light changes over time, and review min, average, and max values
Optional calibration - Fine-tune against a trusted meter; Pro saves separate factors for the front and rear cameras
Units & privacy-friendly storage - Switch between lux and fc; your measurements stay on your device
How to Use:
Open the app, allow camera access, and point your iPhone at the area you want to measure. Switch between Environment, Photography, and Plant modes, then save a reading or run a continuous measurement when you need a longer sample.
Subscription Options:
* Weekly and yearly subscriptions, plus a lifetime purchase
* Payment will be charged to your Apple ID account
* Subscriptions renew automatically within 24 hours before the current period ends
* Manage or cancel anytime in your Account Settings
Clearer readings. Better light decisions.
Terms of Use: https://lightmeter.xzonesoft.com/terms.html
Privacy Policy: https://lightmeter.xzonesoft.com/privacy.html
Contact Us: support@xzonesoft.com
Ratings & Reviews
1.Support full-screen detection view
2.Fixed known issues
The developer, 灿耿 陈, 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
- 灿耿 陈
- Size
- 3.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 17 or later.
- iPhone
Requires iOS 17 or later. - iPad
Requires iPadOS 17 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 and 10 more
- English, Arabic, French, German, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Weekly Access $1.99
- Annual Subscription $7.99
- Lifetime Access $0.00
- Copyright
- © Xzonesoft Light Meter