Light Meter - measure luminosity in lux, fc, lumen App Reviews

Not accurate at all..just waste of time & money..

Im a projectionist as well as a photographer and find it very useful for matching screen brightness in widescreen blends.

I bought this for my grow room and it is accurate AF! Just as good as a $80 machine. Im thankful I found this before I left the house to go buy one.

I wanted the convenience of having a light meter on me at all times. I have compared it to my professional meter and found it is 3-5% high when 3 feet from light source and 10-15% high when 5 or more away. Still offers a good ball park reading any time I want one. Great value for the price.

I have compared the readings of this app to my Professional Sekonic Lux meter and the readings were not even close. Even without the comparison i could tell readings were way off. As there is no way to calibrate the app i dont understand how it could ever deliver a precise reading across all models and individual iphones.

This is great! Its a light measurement tool in your pocket all the time. Its very easy to use and is designed elegantly and with simplicity. The reading are very quick. This is super convenient and quick. Ill be using this more often!

Not accurate at all. Next to calibrated digital light meter gives all the time wrong readings. Better do not buy

not even remotely accurate. pushing the reading button repeatedly will give readings all over the board, even under constant lighting. in other words all this piece of crap does is spit out random numbers.

Unfortunately, the readings from this app have nothing to do with reality. Im looking at a handheld meter next to my phone and readings are WAY off. Do not buy this app.

Had it next to a sylvan is fc/lux meter. Its never was even close. Could be a great economical tool but needs fixed.

This is a nice app to play with but couldnt use this for a professional purpose!

I downloaded the app for the purpose of knowing the difference in lighting between different spots in my house for my indoor plants. The app serves this purpose beautifully and will help me keep my plants get what they need and stay healthy.

Its crap! No help? Really? !!! Keep searching or go spend the $ on a real light meter. Worth the additional $ spent.

No repeatability at all. iPhone 5

I have no idea how accurate this meter is since I dont have a real one to compare it with but it is an interesting app. I can see some uses for it. It does make a camera noise when you hold the button which is annoying if you dont turn off the sound.

I love this app. I use it to check my reptiles lights to see if they are bright enough. Its not perfect on the iPhone 4S but its really for the iPhone 5(S/C) so its no problem to me plus its only off by so little it doesnt matter for my use. I love it.

I wonder how many of these reviews are legitimate. The readings I am getting arent very accurate. In the brightest sunlight it reads about 6,500 lux, where it should be around 100,000 lux. Either the readings are inaccurate, or the units are actually foot candles, in which case would make more sense. The interface is very clean and professional. I will update my review with the next update in response to reading accuracy improvements.

Tested side by side with a calibrated meter. Calibrated meter read 450 lux. This app measured 230. It should be illegal to call this a calibrated meter. I knew that was incorrect but did not expect the app to be entirely worthless. I feel I was lied to and stolen from.

I compared with output of professional light meter. Took 10 readings between 0.5 and 100 lumens. The average difference between the light meter app and the professional instrument was 35 lumens. I question the validity of the reviews that claim this app is accurate. This app is a scam.

I was trying to read the lumen output of a 23,000 lumens metal halide bulb, this app claimed it was 54 lux, which would be 5 lumen per square foot. Not accurate, not a real measuring devices. It just claims a random number. Not even close.