Light Meter・Lux Meter
Check exposure, plants & rooms
About
This utility app transforms your smartphone into a professional light measurement tool, offering precise real-time readings in lux, foot-candle, and EV. It helps users meet lighting standards for various environments and optimize conditions for plant growth, with features for tracking changes over time.
What's New in Light Meter・Lux Meter
1.3
July 13, 2026
Bug fixes and performance improvements for a smoother experience.
Subscription plans
Monthly
Full access, billed monthly.
Developer apps
FAQ
What is Light Meter used for?
Light Meter is a utility app that turns your phone into a professional light measurement instrument. It provides accurate, real-time readings in lux, foot-candle, and EV, helping you assess lighting conditions for various needs.
Does Light Meter have ads?
No, Light Meter does not contain advertisements. The app is free to try all features, with a subscription required only for continued access after the trial period.
What are the subscription details for Light Meter?
All features of Light Meter can be tried for free. A subscription is necessary for continued use beyond the trial period. Specific pricing and tier details are available within the app.
Can Light Meter help with plant care?
Yes, Light Meter is designed to assist with plant care by calculating Daily Light Integral (DLI) and PPFD estimates. It also includes a plant compatibility guide to help you find ideal spots for various plants.
What lighting standards does Light Meter check?
Light Meter can instantly check if your space meets lighting requirements for environments like offices (300–500 lux), classrooms (300–500 lux), libraries (500+ lux), and hospital wards (100–200 lux), providing clear pass/fail indicators.
What devices is Light Meter compatible with?
Light Meter is available for iPhone, iPad, and iPod. It runs on iOS devices and is suitable for users who need precise light measurements on the go.
How often is Light Meter updated?
The latest version of Light Meter is 1.1, which was last updated on April 21, 2026. Updates typically include improvements and new features to enhance the user experience.
What is the age rating for Light Meter?
Light Meter has an age rating of 4+. This indicates it is suitable for users of all ages and does not contain content that would be inappropriate for children.