light meter lux meter
lumen meter illumination meter
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Measure light in lux & foot-candles with your iPhone. Calibrate, track sessions, and get Pro insights for plants, photos & your desk. Try LightMeter Pro today.
Light Meter - measure illuminance in lux and foot-candles
Turn your iPhone into a handy light meter. See how bright your room, desk, or scene really is - ideal for photographers, plant parents, home offices, and anyone who cares about lighting.
Why Light Meter
• Live readings in lux or foot-candles with session min/max
• Hold to freeze the value while you move
• Calibration with profiles (indoor, outdoor, studio, custom) and a guided calibration flow
• Diffuser modes when you use paper or a professional diffuser over the sensor
• Dark, readable UI with optional lux-based background and camera overlay
LightMeter Pro
Unlock the full toolkit:
• Smart insights and a confidence indicator for steadier readings
• Auto scene labels so you instantly recognize dark, indoor, bright, or daylight-like levels
• Specialized modes - rough plant / PAR guidance, photography tips, and workspace ergonomics (not a substitute for lab equipment)
• Measurement history with charts and CSV export
• Advanced accuracy, smoothing, and richer visuals for power users
Good to know
Readings are estimates from your device’s camera and software - they’re great for comparing spaces and setups, not for certified compliance or safety-critical measurements.
Download Light Meter and see your light in numbers.
Privacy Policy: https://asarulabs.com/privacy.html
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Asaru Labs LTD, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ASARU LABS LTD
- Size
- 15.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 9 more
- English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Yearly Plan USD 19.99
- Monthly Plan USD 3.99
- Weekly Plan USD 1.49
- Lifetime USD 29.99
- Copyright
- © 2026 Asaru Labs LTD