Any recommendations for a par meter

calvin.m16

calvin.m16

Well-Known Member
Blazin Budz said:
So what are you saying? That everyone who says it works is lying? I've tested it against my $500 pulse pro and the readings are identical. Running HLG quantum boards. Using a Samsung S20 Ultra. No diffuser or whatever those other comments are talking about.
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For iphone the creators of the app suggest the filter to get accurate readings. If you do not use a filter over the sensor you will get an extremely low reading that is way way off on both spectrum and ppfd.

If you read my latests posts I used a piece of white printer paper over the phone like they suggest and it worked. Spectrum was within 5% of what I have from a $500 apogee meter. I actually realized thanks to the app that I needed to turn my lights down to 50% instead of 75% on my LEDs.

The app works I just was being stupid and not following the instructions.
 
C

chronnie49

Well-Known Member
calvin.m16 said:
I don't know I have an iPhone 13 and it doesn't work on it. Way off. There was a "lumex" or something app I tried a year or two ago on my iPhone 10s Max, also same result, didn't come close to Apogee meters. Also those apps are going to make you pay a fee to test different spectrums etc. I would just buy a Phantom meter if you're on a budget. https://growgreenmi.com/photobio-advanced-quantum-par-meter $138.00

I use the Phantom 1000w Double Ended fixtures and love them, they are going 3 years strong.
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Do you own that meter? Looks like a good deal of it's accurate.
 
2

2com

Well-Known Member
calvin.m16 said:
For iphone the creators of the app suggest the filter to get accurate readings. If you do not use a filter over the sensor you will get an extremely low reading that is way way off on both spectrum and ppfd.

If you read my latests posts I used a piece of white printer paper over the phone like they suggest and it worked. Spectrum was within 5% of what I have from a $500 apogee meter. I actually realized thanks to the app that I needed to turn my lights down to 50% instead of 75% on my LEDs.

The app works I just was being stupid and not following the instructions.
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You only need a filter if using an iPhone, dude.
 
2

2com

Well-Known Member
Guys, the growlightmeter (Photone app) website has a bunch of information. For example, how to use the app properly. Also, there is an FAQ section that answers most if not all of the questions being asked. Also, check this out - when you scroll to the bottom of their website, there is a link called "Whitepaper" (put your boners away). You can give an email and they'll send you a link to the whitepaper/study on the app compared to "professional meters" (I didn't read it, but just downloaded the PDF to read later).
Link: https://growlightmeter.com/whitepaper/

Not to mention, we should all know now that several people with professional gear have compared the app on this phone or that phone and shared the results.

Edit:
@DoubleAtotheRON Please share the results of guy whos gonna do comparison with his meters, will ya?
Edit: Shit, hope this whitepaper includes comparison of more than only Apple devices.
 
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MrStickyScissors

MrStickyScissors

Well-Known Member
I got 12,000 Btu Emerson cool mini split. 250 pint dehumidifier, 7 gAvitas, number 10 copper wire. Double 40 breaker. And ebb n flow trays.
 
2

2com

Well-Known Member
LeastExpectedGrower said:
Photone is known to be accurate on iPhones but not so much on Samsung phones. There's a number of other apps that people here recommend for Samsung, etc. For iPhone, it rates pretty darned good for anything that's X, XS or newer. I use it (properly, with paper diffuser) regularly.
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According to the app developer(s), "There is no issue with Samsung phones". And they use Samsung phones (among others) in their testing/development. Eg: Samsung Galaxy phones.
 
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