Keep The Guesswork Out of Grow Lighting
Measure PAR / PPFD, Lux, Kelvin: All with an app
Go Pro:
Set up your plants' lighting with a proper PAR light meter.
Photone is the light meter app that allows you to take all the
light measurements relevant for your plants and for all widely used grow light technologies.
Measurements
-
PAR / PPFD in µmol/m²/s
-
DLI in mol/m²/d
-
Illuminance in lux and foot-candle
-
Correlated color temperature (CCT) in Kelvin
Your Benefits
Built for Grow Lights
We actively develop, test, and optimize for the widely used grow lights in the market.
No Costly Equipment
Photone only requires your smartphone's camera — nothing else.
Tailored to Plants
Measure PAR in µmol/m²/s and even calculate your plant's DLI at the palm of your hand.
Proven Accuracy
Compared to various common hardware light meters or similar apps, Photone is repeatedly achieving the lowest average error rates in measuring grow light illuminance.
Average Error
31.7 %
Light Meters
1.8 %
iPhone 14
Photone
0.9 %
iPhone 11 Pro
1.5 %
iPad Pro 11"
More information on measurement accuracy and evaluation details on the above error rates can be found in our extensive light meter comparison.
View ComparisonReviews and Mentions
Comparison to Apogee SQ-500 PAR Sensor
by MIGRO
Comparison to Apogee MQ-500 PAR Meter
by HowWeedGrow
Comparison to Apogee MQ-500 PAR Meter
by Growing Answers
Comparison to Apogee SQ-120 Underwater PAR Sensor
by Recif_conde
User Reviews
Impressively similar to quantum sensors
Tested the app against a 500$ hydrofarm quantum sensor and as long as your light
diffuser is
properly attached, your readings will be identical
more
Great app!
My problem with my soup, was actually my lighting problem. I was able to
mitigate my hot and cold spots. My average DLI across my garden is now around
40. Before I had spots as low as 14 and as high as 80, yikes! After adjusting
the light I was also able to turn off 60 watts of LED lightning saving energy
and my plants. Highly recommended app!
more
Handy App for your phone no need for extra equipment
best app of 2023. I've been Wondering if my plants have been getting proper light,
come to find out my lights were more efficient than I had thought and I've been roasting
my plants until now thank you tons ..
more
Matches Manufacturer PPFD at given height
Compared to what my manufacturer claims my lights PPFD is at 12” which is around
780 and this app came to about high 700s low 800s very happy with accuracy
more
Very useful in the indoor garden
It's simple to use, has a pleasant interface, and the readings correlate to
manufacturers PPFD output charts for my grow lights. Very useful for setting LED
light heights. Make sure to construct the simple white paper diffuser as
recommended by the developers . I wholeheartedly recommend this app.
more
Really a standout product, 11/10
Well heck, this does *exactly* what it claims, provides excellent & detailed information, and couldn't be easier to use- and as anybody reading this knows, an app that checks those 3 boxes is a rarity.
OH, and the free version *is actually free* and has never once bombarded me with stupid ads or interrupted me to try to get me to upgrade - 🫡🤝🤘
more
Download
Photone is available for iPhone, iPad, and Android Smartphones.
It's
free.