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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.

Category : Tools

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Reviews (29)

Dan. N. Mar 29, 2022     

It does not rotate the screen (portrait mode only), and doesn't use the rear camera. But if has no other problems, looks good, provides graph, provides light sensor details, can display in lux or fc units, other useful options.

Som. U. Oct 11, 2020     

Used to work fine, but the newly-appeared ads are disappointing. I wish I had saved the old APK.

Say. H. A. Dec 19, 2021     

not acccessable for the blind at all . more funny i dont know why its average rating is 5 while many people give less than 5 rating

Joh. P. Oct 2, 2018     

I got the same problem as others have reported, where it's constantly jumping down to zero. It's too bad, because I saw some good features.

Nig. W. Dec 15, 2019     

I give this app and ALL of your apps 5 STARS !! Excellentform and function and completely user friendly!!

Abh. T. Dec 1, 2019     

It is the best and simplest light metre out there rest of all apps are mostly cluttered

Kat. V. Oct 10, 2019     

Really appreciate that it's free of ads. Thank you.

Pra. K. May 11, 2020     

It Fluctuates even when No Ligjt change , like 200 to 0 lux Fluctuation . Why ?? 😤

Dav. B. Nov 6, 2016     

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!

Ken. O. Aug 21, 2016     

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!!

A. G. u. Feb 11, 2017     

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.

Jua. D. E. Jul 21, 2016     

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.

Gue. D. Dec 29, 2015     

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!

Mar. R. Mar 11, 2017     

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

Gir. D. Jun 4, 2016     

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.

Вал. С. Nov 19, 2016     

It is constantly jumping between 0 and some value.

Rya. Mar 27, 2017     

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

Jon. R. Jan 25, 2016     

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

Mic. R. May 29, 2016     

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

A. G. u. Nov 21, 2017     

Works well but whats up with the pink??? The developer really needs to reconsider their color choice to something neutral or give the user control of it in settings. It would also be a nice to have the option to completely do away with the "Meter" look and have a full screen without the child-like graphics.

Sør. k. Jan 30, 2016     

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

Ran. B. Dec 18, 2017     

Would be nice if one could email/save results!

Rom. A. Mar 15, 2017     

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

Ted. G. Jul 7, 2017     

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

M. H. Nov 12, 2016     

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

A. G. u. Mar 9, 2016     

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

Sub. P. Dec 28, 2017     

Grt app because of its lux vs time graph... U can compare illuminance wrt time

Luc. N. Aug 30, 2017     

Excellent app with me! Thanks!

Min. D. N. Feb 25, 2016     

Thanks u!