Keep The Guesswork Out of Grow Lighting

Awesome!

within 5% of my friend's expensive $2k light meter.

Everything you need, nothing you don't

I finally bought an inexpensive grow light. I downloaded this app to see if it could help me ensure that seedlings weren't being starved or fried with light. Outside at 10 am sunlight came in at 1500 par. inside under grow light 900 par at canopy. I dimmed the light to 500. I couldn't have understood what I was dealing with without this app. It is quick and easy to set up and use. It doesn't share info with third parties. everything you need, nothing you don't.

Brilliant

It took just 5 minutes from download to doing my first readings. The instructions are very clear and easy to follow. I paid £5 for one month pro which is incredibly good value compared to the cost of the real kit. … I am a complete beginner with grow lights and had been following manufacturer instructions. I discovered my lights were too high up and too dim, so I have lowered them and undimmed them. That’s £5 well spent. I also tried it in the greenhouse, on the patio and inside the house and am astonished at the differences in light when to my eyes it all looks much the same. No wonder my indoor seedlings used to struggle.

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 - 🫡🤝🤘 The paid version upgrade will probably only appeal to a tiny subset of users, but rad if ye need such. Really a standout product, 11/10.

Photone has been an absolute life saver

I have been using this to gauge the light for my carnivorous plants mostly since they are quite finicky with light requirements. Photone has been an absolute life saver. They are all happy, healthy, and properly colored thanks to the accuracy. I just use the paper method for the diffuser. It works perfectly.

This app has been fantastic…

…I have the diffuser accessory now, and it made it a lot more stable. I have been using paper and it was reading quite a bit lower than it actually was and I always thought I was having to run my plants with low light and I felt bad always trying to push them thinking I was running low. Now, with the accessory, it seems to be much better. I had to raise my lights and dim one of them, and after a couple of weeks, everything is great.

Very good app…

…and very easy to use thanks to the DLI display. Fairly accurate even without calibration; after calibrating with an expensive PAR meter, the subsequent readings stay consistently precise. Very good support, questions are answered within a few hours. Very good blog on the website. The clip-on diffuser is recommended, but plain white copy paper will also do in a pinch.

Absolutely essential for LEDs

I'm using powerful LEDs (720 W) for the first time after years of HPS. So I wanted to get an Apogee, but they cost more than €1000 in France! After some research on Reddit, I discovered Photone, which some people had compared to the Apogee, and given the price of the LED pack (€6.99), it was a no-brainer. Once I had bought the pack and made the paper diffuser, I was blown away by how effective and consistent the measurements were. I raised my LEDs, increased the light intensity and watched the plants explode almost before my astonished eyes. … And all that for €1000 less than an Apogee, for a probably identical result!

I'm so grateful for this app!

Using new led light to help my bonsais during winter and gave them (by accident) 2000 PPFd. This app literally saved them from becoming scorched. I ordered diffuser from the site but it works like a charm even with paper diffuser! Thank You!!!

6 out of 5 stars!

Really, everything about this app is right! The user interface is easy to understand throughout, very easy on the eye, completely clear & user-friendly. There are info buttons & help everywhere, for every single parameter, but without being forced on you! You already get 99% of all features in the free version. Calibration works flawlessly. The website also has light calculators & much more. I've rarely been so positively surprised!