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It's great, it doesn't have ads, it can be used for a long time, it doesn't need the internet, and it can use the front and rear cameras.
Archived App (Last seen on 29 Jan 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
Transform your iPhone into a precise light meter. Measure illuminance in lux and color temperature in Kelvin to assess lighting conditions for photography, plant care, or general environment checks. Get instant feedback on brightness and color balance without any extra equipment.
✓Real-time lux readings
✓Color temperature measurement (Kelvin)
✓Exposure diagnosis
✓Camera-based measurement
✓History list
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What's New in Lux Light Meter by LightCheck
1.2
September 8, 2025
• Improved lux accuracy in low and bright scenes • Better color temperature stability (Kelvin) • Faster startup and smoother camera preview • General performance improvements and bug fixes
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FAQ
What is Lux Light Meter used for?
Lux Light Meter turns your iPhone into a practical tool to measure real-time illuminance (lux) and color temperature (Kelvin). It helps you assess if a scene is too dim or too bright, making it ideal for photography, checking indoor plant lighting, and everyday lighting evaluations.
Does Lux Light Meter require any extra hardware?
No, Lux Light Meter uses your iPhone's camera for measurement, meaning no extra hardware is needed. This makes it a convenient and accessible tool for on-the-go lighting analysis.
What kind of readings can I get with Lux Light Meter?
You can get lux readings to understand light levels, exposure diagnosis to avoid under- or over-lit scenes, and color temperature tips to balance warm and cool tones. It also provides a simple history list to review recent readings.
Is Lux Light Meter suitable for indoor plants?
Yes, Lux Light Meter is great for checking indoor plant light needs and grow-light placement. It helps you ensure your plants receive the optimal amount of light for healthy growth.
How accurate is Lux Light Meter?
Lux Light Meter has received a 5.0-star rating from 2 users, indicating a high level of user satisfaction with its performance and accuracy. The app measures real-time illuminance and color temperature.
What devices does Lux Light Meter support?
Lux Light Meter is supported on iPhone and iPod devices. It is designed to work with Apple's mobile operating system.
How often is Lux Light Meter updated?
The latest version of Lux Light Meter is 1.2, which was last updated on September 8, 2025. This suggests regular maintenance and potential feature additions.
Is Lux Light Meter free to use?
Yes, Lux Light Meter is available for free. There are no in-app purchases or advertisements, providing a completely free experience for users.