Light Meter

Light Meter Free App

Rated 4.03/5 (755) —  Free Android application by keuwlsoft

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About Light Meter

This app uses the light sensor to measure illuminance in lumens per square meter (lx) or lumens per square foot (foot candles). FOR INDICATION ONLY. Results depend on your device and its hardware (Not every device has a light sensor and quality of the sensors varies massively). Features include:

Analogue dial to show current reading.
Averaging.
Maximum and minimum values.
lx or ft-c units.
4 time constant options. 3 Refresh speeds.
Graph – Shows the time depedence of the light.
Autoscale or manual (pinch & pan) Y-Axis.
Calibrate option – If you have a calibrated light meter or known light source, you can use this option to calibrate the meter. (However app is still for Indication Only).

More details can be found on the website.

How to Download / Install

Download and install Light Meter version 1.2 on your Android device!
Downloaded 100,000+ times, content rating: Everyone
Android package: com.keuwl.lightmeter, download Light Meter.apk

All Application Badges

Free
downl.
Android
3.0+
For everyone
Android app

App History & Updates

What's Changed
removed internet permission and other minor tweaks
Version update Light Meter was updated to version 1.2
More downloads  Light Meter reached 100 000 - 500 000 downloads
Version update Light Meter was updated to version 1.1
More downloads  Light Meter reached 50 000 - 100 000 downloads

What are users saying about Light Meter

S70%
by S####:

Does what it says on the tin. Love the graphing and min/max function, since most of my use here is comparing two sources. We'll done! Saw this on AvE on YouTube, screenshotted it to get the bame. Wasn't disappointed! Free and no ads AND not junk is a rarity these days -- thank you for releasing this!

T70%
by T####:

Numbers drop to zero if light does not change for a few secinds. Impossible to get a stable result.

T70%
by T####:

Him does not seen to work as expected or even at all meter swings back to zero and back again

G70%
by G####:

It is constantly jumping between 0 and some value.

E70%
by E####:

Doesn't work on my HTC M8, needle twitches then returns to rest.

L70%
by L####:

Needle moves in opposite direction... Increased brightness yields lower reading value....Increased darkness yields higher brightness reading....Galaxy Note 4.

T70%
by T####:

Very smooth interface, and I like that it holds min/max values. Only improvement I would like is the option to switch to the back camera.

T70%
by T####:

nice app. I think you can make a thacometer app base on light sensor. It would be fun. At all thank you...

L70%
by L####:

Quá lởm, sai lớn.

T70%
by T####:

Cool, but when not moving the phone the meter cuts back to 0

T70%
by T####:

Does not work

T70%
by T####:

Does what it's supposed to do

T70%
by T####:

Fab bit of kit

J70%
by J####:

Very nice app :)

T70%
by T####:

Works perrrrrrfect..

T70%
by T####:

Good app

T70%
by T####:

Simple and to the point

B70%
by B####:

I have many devices and it works on them all. Those with issues with it not continually reading it's due to your device. My HTC M9 works as it should but my wife's S5 and my Nexus6 you'll have to either cover the sensor then uncover or change expose amount. My max reading was 32500 in direct sunlight.

H70%
by H####:

Brilliant for testing my lighting for camping or fishing. Lets me know when to swap out 12v batteries when running multiple lights from them. Well done to the Author its nothing short of excellent...thankyou!!

T70%
by T####:

This app is not working properly on my HTC smartphone. This app sometimes indicates brightness, even when I cover the sensor. Likewise, it sometimes indicates darkness, even the sensor faces a light source. I'm just confused. Could somebody please tell how to calibrate the app? Thank you!

T70%
by T####:

Numbers drop to zero if light does not change for a few secinds. Impossible to get a stable result.

T70%
by T####:

It fluctuates between 0 and the actual measure randomly, have to keep your finger on the screen at all times in order to have a better reading.

T70%
by T####:

Value drops to zero almost immediately when light value doesn't change

T70%
by T####:

It calibrates. And comes free of ads. Thank you!

O70%
by O####:

Why dont you implement readind of k light also

T70%
by T####:

Compared a few light meter reading apps. Here are my findings: Light Reading Meter is best, light meter pro comes 2nd and lux meter 3rd.

T70%
by T####:

Checked it against a dedicated device and it is comparable. No ads is a pleasure!

T70%
by T####:

That's not color temperature reading it's important to know the color temperature of my lighting

T70%
by T####:

Uses selfie camera instead of Main camera

T70%
by T####:

Thanks u!

T70%
by T####:

Works great

B70%
by B####:

Works for a while then the value tails-off until I cover then reveal the sensor quickly.

Q70%
by Q####:

Bounces back to 0 constantly

T70%
by T####:

Goog

N70%
by N####:

Works perfect.

R70%
by R####:

Not working

R70%
by R####:

Nexus 4/Android 5.1.1 The app doesn't read until the light level changes (e.g you cover and then uncover the sensor) when it indicates for a second and then goes back to zero. Please fix cos the GUI looks cool and you have a history chart which others don't!!

R70%
by R####:

Very good aplication! but can't show luminance above 10000 lx

R70%
by R####:

Works well and has a number of decent features and settings. Well made, would definitely recommend for Nexus 5 users if you need it! (Note I was NOT using this app for science)

C70%
by C####:

I have many devices and it works on them all. Those with issues with it not continually reading it's due to your device. My HTC M9 works as it should but my wife's S5 and my Nexus6 you'll have to either cover the sensor then uncover or change expose amount. My max reading was 32500 in direct sunlight.


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Rating Distribution

RATING
4.05
755 users

5

4

3

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1