Lux Meter

Contains ads
4.92K reviews
Content rating
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About this app

Measure the ambient illuminance in lux (lx) or foot-candle (fc) with your light sensor.

Simple application to detect the intensity of light. Check and compare the illuminance of different light sources.
With recording function (see below).

The measured values depend on the accuracy of your light sensor. It may differ from real illuminance and between different devices.
The application only works if your device has a light sensor.

* Unit: lux or foot-candle
* Minimum and maximum values
* Diagram with average value
* Adjustable sensor sensitivity
* Calibrate if the sensor's values differ from real illuminance
* Choose your layout color
* More settings
* Application can be moved to SD card

Record the illuminance for up to 16 h 39 min. Select the recording time and the number of recorded values.
The data can be saved or exported (for example via email).

'Internet and network access' are needed to show the ad. Therefore the application is for free. Read the privacy policy to get more information about advertisement and your data.
'Read/modify contents of your SD card' is used to save your recorded illuminance data.
Updated on
Mar 8, 2016

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
No information available

Ratings and reviews

4.92K reviews
mohammad khosravi
November 10, 2020
This app is awesome. The most useful mobile app ever, of course for me! I cultivate some plants. And it helped me to calculate the light intensity of my grow room. I dont need a lux meter (which is realy expensive in my country) anymore. And there's another cool thing in the app which enables you to record the data of the received light during a period of time. I'd really suggest you to download it.
10 people found this review helpful
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Tony Frazer
October 9, 2019
Calibrated with an industrial meter. Calibration couldn't be easier. Enter your phones reading, enter the reference value and it automatically calculates the offset. Once calibrated it is remarkably accurate. Outstanding app. Thank you!
16 people found this review helpful
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William Zhang
December 15, 2019
Be careful! This app wants permission to your files and is clearly tracking you and giving your data to other advertisers! The app said that my phone didn't have a sensor and I could clearly see a proximity sensor above my screen. Please stop collecting too much of our personal data just for influential ads and please fix the problem.
50 people found this review helpful
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What's new

- Android 2.2 (Froyo) is no longer supported -
* Recording function: record illuminance and save/export it
* More settings: lux or foot-candle, sensor sensitivity, calibration, diagram settings
* NEW PERMISSION: 'Read/modify SD card' to save your recorded values
* Link to privacy policy & consent from EU users is requested
* Various little improvements in performance and layout