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Photone - Grow Light Meter App Reviews

The Photone - Grow Light Meter app recently received 8 positive reviews on iPhone, iPad, and Android devices, and 1 negative reviews. Users in the United States have given Photone - Grow Light Meter app an average rating of 4.63 out of 5 stars, based on a total of 3.8K ratings since its release on Sep 24 by Lightray Innovation GmbH. Can you share your positive or negative thoughts about Photone - Grow Light Meter?

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Ratings and Reviews

Rated 4.25 out of 5

3.8K global ratings

5 Star

63%

4 Star

3 Star

25%

2 Star

13%

Explore global reviews of the Photone - Grow Light Meter app: Germany.

8 Positive User Reviews for Photone

Don’t wait just buy it!

Don’t hesitate should have bought this sooner!

Jan 11, 2026 Gas M. Version: 3.50 Reply

The best

The best app for light measuring (Period).

Jan 11, 2026 R. Version: 3.50 Reply

Something went wrong!

Up until this latest update it was very accurate! My ppfd was right at 1000 about 20” from the middle of my LED lights. Which is about what the manufacturer says it should be too. But after the update it now reads around 650ppfd. And to get it to 1000ppfd I have to hold it 2” from the light!!! Which I know is absolutely wrong. And way to get this back to being accurate again?

Jan 11, 2026 X. Version: 4.00 Reply

Worth Every ¢

I love this app. Use it for every grow, and the diffuser accessory makes it a snap to get the readings I need fast. The app, and diffuser are worth the money.

Jan 11, 2026 G. Version: 4.10 Reply

App not functional on new ios

Other than that this app is a godsend

Jan 11, 2026 P. Version: 4.10 Reply

Was great until update

It worked perfect until the update. It was really accurate until now.

Jan 11, 2026 D. Version: 4.10 Reply

Desde Venezuela

Exelente para controlar mis plantas

Jan 11, 2026 Chino M. Version: 4.10 Reply

1 Negative User Reviews for Photone

Use to be a 5 star

Not sure what happened with this update. I guess I’m hearing about but it’s ruining my grow. I have a paid for a version and it’s not accurate anymore. It used to be but now it shows PPFD off 2 300. Not sure when the next update will be, but this is ridiculous. Hope it’s resolved

Jan 11, 2026 Y. Version: 4.10 Reply