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Photone - Grow Light Meter 4+
Perfectly light your plants!
Lightray Innovation GmbH
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- Free
- Offers In-App Purchases
Screenshots
Description
Take the guesswork out of grow lighting! Measure PAR / PPFD, lux, fc, and kelvin: All within the most accurate light meter app out there.
Setting up your plants' optimal lighting is not easy, if not impossible without a proper PAR / PPFD plant light meter. Calculating your indoor garden's daily light integral (DLI) to match your plants’ needs allows you to optimize your lighting for maximal yield at minimal electricity consumption.
Our Photone grow light meter app measures photosynthetically active radiation (PAR) as PPFD in µmol/m²/s, calculates the daily light integral (DLI) in mol/m²/d, and measures illuminance in foot-candles or Lux. It also allows you to measure light temperature in Kelvin which can help you determine if a light is suitable for fruiting and flowering or for vegetative growth.
Photone is by far the most accurate light meter app for plants and achieves industrial grade accuracy that easily compares to dedicated and very expensive quantum PAR sensors. You can learn more on how we achieve ±5% accuracy compared to research grade laboratory equipment and how to achieve maximum accuracy by yourself in our white paper: https://growlightmeter.com/whitepaper/
The Photone app also contains useful guiding articles to help you get the most out of your plant lighting. In addition, you can find more informative and educational content on our blog: https://growlightmeter.com/blog/
Wondering how much light your plants need? The plant lighting calculator on our website helps you to dial in your lighting to your specific plants' needs: https://growlightmeter.com/calculator/
To receive an accurate PAR and thus DLI measurement, you need to select the correct light source that you are measuring. Some common light sources are already available for free while others may need to be purchased additionally. In this way, we are able to fund our development efforts and offer the most accurate light meter app out there without annoying ads.
Our Photone Pro subscription enables you to access all supported light sources, measure light color temperature in kelvin, additional pro features, access additional resources for better results in plant growth, and receive our premium support – and there’s even more to come in the future!
The subscription is auto-renewable and automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal at the price listed within 24 hours prior to the end of the current period. Subscriptions made on iOS devices can be managed and auto-renewal turned off in Account Settings for your Apple ID after purchase. Once purchased, refunds will not be provided for any unused portion of the term. But no need to worry, you may cancel at any time.
You can find our terms of service on our website: https://growlightmeter.com/terms/
As a proud member of 1% for the Planet we are donating at least one percent of all our revenue to environmental nonprofit organizations. With everything that you purchase from us, you will be giving back!
What’s New
Version 3.5.1
After many years of development, we have achieved an even higher level of measurement accuracy! You can now use the dedicated Lightray Diffuser & Cosine Corrector accessory as an alternative to the paper diffuser. Turn your device into a truly professional light meter. Learn more right within the app. This minor update includes fixes for the iPhone SE (1st generation) and devices running iOS 12.
Ratings and Reviews
Sleek design, no fuss
Does the job. You have to pay 59kr for your specific light source, but it’s worth it!
Covers all major light sources (LED, HPS, etc.).
Just hold it above your plant and measure. Read the FAQ on their website first to save you the confusion.
But then it is pretty straightforward.
No ads, no annoying banners & pop ups👍!!!
Highly recommended; simple way to set up your grow lights correctly!
Developer Response ,
Thank you very much for your detailed and insightful review! We‘re happy to hear that you enjoy and appreciate our app.
Requires a diffusor
Works surprisingly well with a diffusor, which is easy to make/find. I bought the full spectrum LED but it gives the same readings as the sunlight spectrum so my money just went to supporting the developers but not much more.
The readings were almost exactly the same as the manifacturer specifications for my light source, even at different distances. But as stated, a diffusor is required rather than recommended.
Developer Response ,
Hi Elonssss,
Thank you for your review.
We‘re happy to hear that you are getting accurate results! We also discussed a wording change for the diffuser recommendation based on your input.
As for the sun and LED full spectrum setting: Yes, the measurement can be similar due to the sun-imitating nature of most full spectrum grow lights. However, we can only guarantee our specified accuracy if the proper setting is used.
Best regards,
Dominik and the Korona Team
App Privacy
The developer, Lightray Innovation GmbH, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Privacy practices may vary based on, for example, the features you use or your age. Learn More
Information
- Provider
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Lightray Innovation GmbH has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- DUNS Number
- 480486980
- Address
- Steinackerstrasse 38 8542 Wiesendangen Switzerland
- Phone Number
- +41 021 508 01 48
- contact@lightray.io
- Size
- 43.9 MB
- Category
- Utilities
- Compatibility
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- iPhone
- Requires iOS 12.0 or later.
- iPad
- Requires iPadOS 12.0 or later.
- iPod touch
- Requires iOS 12.0 or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
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English, French, German, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
- 4+
- Copyright
- © 2023 Lightray Innovation GmbH
- Price
- Free
- In-App Purchases
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- LED Full Spec. lifetime unlock 89,00 kr
- Photone Pro (monthly) 69,00 kr
- Sun lifetime unlock 69,00 kr
- LED Red / Blue lifetime unlock 89,00 kr
- LED B/W lifetime unlock 89,00 kr
- HPS (Standard) lifetime unlock 69,00 kr
- Photone Pro (yearly) 365,00 kr
- FL Tube lifetime unlock 69,00 kr
- CFL Blue lifetime unlock 69,00 kr
- FL Tube lifetime unlock 69,00 kr