Light Meter - lux and foot candle measurement tool

Light Meter - lux and foot candle measurement tool

by Marina Polyanskaya

118 ratings
64 reviews
#173 in paid Utilities
🔧 Utilities
🏥 Medical
$1.99

Details

  • Released
  • Updated
  • September 15, 2015
  • September 8, 2016

Features

Light Meter - lux and foot candle measurement tool screenshot #1 for iPhone
Light Meter - lux and foot candle measurement tool screenshot #2 for iPhone
Light Meter - lux and foot candle measurement tool screenshot #3 for iPhone
Light Meter - lux and foot candle measurement tool screenshot #4 for iPhone
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About

Measure light intensity accurately with your smartphone. This tool provides real-time readings in lux and foot candles, calibrated with professional equipment. Ideal for indoor and outdoor use, it offers average and maximum value tracking.

Real-time light measurement
One-time measurement option
Average and Max values
Indoor and outdoor modes
Front and rear camera support
Lux and Foot candle units
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What users say

See all reviews

What's New in Light Meter

1.1

September 8, 2016

This update from Apple will improve the functionality of this app. No new features are included. - fixed bug with max and average value reset

More

Charts

Top Paid

📉 173-6

Utilities

This app dropped -6 positions in Utilities chart.

Last updated on July 18, 2026.

User reviews

Best free light meter app.

It doesn’t measure constantly, you have to hit a button to sample, BUT it is the ONLY free light measuring app I’ve found that will let me swap cams for different situations!

Great for me

I just use a light meter for plants, and for that it's excellent. It need not be perfectly accurate for me, and it's great for comparing the available light under lights and in windows as the days get shorter and the sun gets weaker.

The

The tw c

Works Great

Have used many times and great for a quick measurement when you don’t need full field equipment.

Make sure you use the best camera on your phone.

My I phone has a front and back side camera. I have a screen protector on the face that affects the readings. I make sure I use the back side camera for most accurate results with this app. Can’t speak to accuracy compared to a standard. This app works great for my needs.

Developer apps

User experience

🐞

Reported Bugs

5 issues

Indoor option fails after first use

Bug

App does not work

Bug

No reading appears

Bug

Lighting bolt reacts but nothing happens

Bug

Difficult to reset

Bug

Requested Features

4 requests

Add color temperature reading

Feature

Ability to see the image

Feature

Instructions on how to use

Feature

Recalibration option

Feature

FAQ

What does this light meter app do?

This app functions as a light meter, allowing you to measure light intensity directly from your smartphone. It provides real-time readings in both lux and foot candle units, calibrated to be as accurate as possible.

What are the key features of this light meter app?

Key features include real-time and one-time measurement options, the ability to view average and maximum light values, distinct modes for indoor and outdoor environments, and support for both front and rear cameras. It offers measurements in both lux and foot candles.

Is this app free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, suggesting a completely free experience for users.

Can this app replace a professional light meter device?

The app is intended for private purposes only and is not a replacement for a professional-grade illuminometer. While calibrated, it is designed for personal use and hobbyist applications rather than professional photography or lighting design.

What are some common use cases for this light meter app?

Common use cases include checking light levels for photography setups, assessing indoor lighting for comfort or productivity, or simply understanding ambient light conditions outdoors. It's useful for anyone needing a quick and accessible way to measure light intensity.