Light Meter: Lux & Plants
Measure Ambient Brightness
About
This app transforms your phone into an ambient light meter, providing instant lux readings with clear, easy-to-understand interpretations for plants, desks, and rooms. It allows for side-by-side comparisons of different light spots and saves results for later review.
What's New in Light Meter
1.0
April 17, 2026
Subscription plans
Weekly Premium
Weekly Premium Access
In-App Purchases
$29.99
Lifetime Premium
Unlock all premium features forever
Developer apps
FAQ
What is Light Meter's primary function?
Light Meter turns your iPhone into an ambient light meter. It provides instant lux readings and explains what they mean in plain English, such as whether a space is suitable for indoor plants or desk work.
Does Light Meter offer different measurement modes?
Yes, Light Meter offers two measurement modes: Quick Check for instant readings without setup, and White Paper mode, which requires placing a white sheet over the camera for improved accuracy through better light diffusion.
Can I compare light levels in different areas with Light Meter?
Absolutely. Light Meter allows you to measure Spot A and then Spot B, instantly showing the ratio between them, like 'Spot B is 2.8x brighter.' This is useful for finding optimal locations.
How does Light Meter handle user data and privacy?
Your camera sensor reads light levels only; no photos are taken or stored. All measurements stay on your device, ensuring your privacy. The app is designed for practical everyday use and is not a certified measurement instrument.
What are the premium features of Light Meter?
Premium unlocks unlimited measuring, saved history of your readings, and the ability to generate shareable result cards. These features are available through weekly, yearly, or lifetime subscription packages.
What is the update frequency for Light Meter?
The app was last updated on April 17, 2026, indicating recent development. While specific update frequency isn't detailed, the latest version suggests ongoing support.
Is Light Meter suitable for professional or regulatory use?
No, Light Meter provides approximate readings for practical everyday use. It is not a certified measurement instrument and should not be used for regulatory compliance or safety-critical applications.
What devices is Light Meter compatible with?
Light Meter is compatible with iPhones, iPads, and iPods, and has an age rating of 4+, making it accessible for a wide range of users.