# Light meter for Android **URL:** \ **Category:** Climate\ **Tags:** lighting\ **Created:** [August 10, 2021, 11:09am UTC](https://ilgmforum.com/t/light-meter-for-android/72730 "2021-08-10T11:09:02Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![NYDon](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/nydon/32/565510_2.png) [@NYDon](https://ilgmforum.com/u/NYDon)\ **Post date:** [August 10, 2021, 11:09am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/1 "2021-08-10T11:09:02Z")
Have you fine folks ever used either of these apps for measuring light? ![Screenshot_20210810-070759_Google Play Store](https://global.discourse-cdn.com/growingmarijuana/original/4X/d/a/1/da1e3e6c23af3daf45f3a768d39b375624eb79a5.jpeg) ![Screenshot_20210810-070738_Google Play Store](https://global.discourse-cdn.com/growingmarijuana/original/4X/b/4/a/b4a1755c62407664e19df08599f5cb52c20ee14b.jpeg) Thank you Don ---
**Author:** ![Dclark](https://avatars.discourse-cdn.com/v4/letter/d/b782af/32.png) [@Dclark](https://ilgmforum.com/u/Dclark)\ **Post date:** [August 10, 2021, 11:12am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/2 "2021-08-10T11:12:49Z")
Allow photo to load before typing ---
**Author:** ![NYDon](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/nydon/32/565510_2.png) [@NYDon](https://ilgmforum.com/u/NYDon)\ **Post date:** [August 10, 2021, 11:15am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/3 "2021-08-10T11:15:57Z")
![Screenshot_20210810-070738_Google Play Store](https://global.discourse-cdn.com/growingmarijuana/original/4X/b/4/a/b4a1755c62407664e19df08599f5cb52c20ee14b.jpeg) ![Screenshot_20210810-070759_Google Play Store](https://global.discourse-cdn.com/growingmarijuana/original/4X/d/a/1/da1e3e6c23af3daf45f3a768d39b375624eb79a5.jpeg) ---
**Author:** ![Dclark](https://avatars.discourse-cdn.com/v4/letter/d/b782af/32.png) [@Dclark](https://ilgmforum.com/u/Dclark)\ **Post date:** [August 10, 2021, 11:20am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/4 "2021-08-10T11:20:03Z")
Never used them sorry bro ---
**Author:** ![GreenSnek](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/greensnek/32/366307_2.png) [@GreenSnek](https://ilgmforum.com/u/GreenSnek)\ **Post date:** [August 10, 2021, 11:30am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/5 "2021-08-10T11:30:53Z")
Nah no light app is any good even with the best cameras all they can measure is lux and that’s VERY unreliable since you need par or ppfd , it’s actually more reliable use a wattage meter and unjust wattage to the ppfd charts provided, or be like me and learn to read your leaves ,praying and stretching means more light shying and tip twisting means less ligh ---
**Author:** ![MidwestGuy](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/midwestguy/32/914277_2.png) [@MidwestGuy](https://ilgmforum.com/u/MidwestGuy)\ **Post date:** [August 10, 2021, 11:33am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/6 "2021-08-10T11:33:10Z")
Some growers use them for a relative comparison, but it is important to remember that these meters measure lumens. Lumens measurement is limited to the wavelengths of light that the human eye sees. PPFD accounts for the wider spectrum of light that can be seen by the plant, but not the human eye. Some of the light manufacturers publish a lumens to PPFD chart (HLG does.) It’s important to keep in mind that differing lights will have differing PPFD profiles for the same amount of lumens. ---
**Author:** ![dirtydave](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/dirtydave/32/626820_2.png) [@dirtydave](https://ilgmforum.com/u/dirtydave)\ **Post date:** [August 10, 2021, 11:41am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/7 "2021-08-10T11:41:42Z")
I have the Korona app it measures in PPFD or so it says you have to put a piece of paper over the camera the accuracy is suspect ---
**Author:** ![Dave101](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/dave101/32/398878_2.png) [@Dave101](https://ilgmforum.com/u/Dave101)\ **Post date:** [August 10, 2021, 11:43am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/8 "2021-08-10T11:43:31Z")
go with the Photone app, It seems to be the most accurate out of all the apps. [![](https://global.discourse-cdn.com/growingmarijuana/original/4X/2/e/8/2e8bc5f954330c2a8054700c15a0d6897bb3b01b.jpeg "Par APP test and comparison | measure PPFD with a phone App accurately") ](https://www.youtube.com/watch?v=K3grFZs8spc) [![](https://global.discourse-cdn.com/growingmarijuana/original/4X/7/2/f/72fe3949206fefa6c9c14aa52b01ef72459ae0dc.jpeg "How to setup your grow light for maximum yield | Make a PAR chart with your phone or lux meter") ](https://www.youtube.com/watch?v=nLF0j2XeMwU) ---
**Author:** ![dirtydave](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/dirtydave/32/626820_2.png) [@dirtydave](https://ilgmforum.com/u/dirtydave)\ **Post date:** [August 10, 2021, 11:58am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/9 "2021-08-10T11:58:25Z")
Thanks @Dave101 I can trust the app but if you have android looks like your SOL ---
**Author:** ![Dave101](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/dave101/32/398878_2.png) [@Dave101](https://ilgmforum.com/u/Dave101)\ **Post date:** [August 10, 2021, 12:03pm UTC](https://ilgmforum.com/t/light-meter-for-android/72730/10 "2021-08-10T12:03:18Z")
I thought photone was available for Android now ? Maybe not ---
**Author:** ![Allinherhead](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/allinherhead/32/525479_2.png) [@Allinherhead](https://ilgmforum.com/u/Allinherhead)\ **Post date:** [August 10, 2021, 2:51pm UTC](https://ilgmforum.com/t/light-meter-for-android/72730/11 "2021-08-10T14:51:41Z")
I use the bottom one ppfd meter and works great with Galaxy s21 light meter. Accuracy will depend on your phone. I like it helped me dial in D L I so I could give the plants the most they can use with out wasting light hrs and running up my power bill needlessly. ---
**Author:** ![NYDon](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/nydon/32/565510_2.png) [@NYDon](https://ilgmforum.com/u/NYDon)\ **Post date:** [August 10, 2021, 11:07pm UTC](https://ilgmforum.com/t/light-meter-for-android/72730/12 "2021-08-10T23:07:31Z")
I down loaded both. Not sure. The one has twice the reading… The first one is the ppfd meter. ![Screenshot_20210810-174729_PPFD Meter](https://global.discourse-cdn.com/growingmarijuana/original/4X/0/e/c/0ec74d893be5f16e628c042d70be715db9469501.jpeg) This next one Is the photone app. ![Screenshot_20210810-174625_Photone](https://global.discourse-cdn.com/growingmarijuana/original/4X/f/9/5/f95b7ad1f19544ef79a3656d77718f5cf85181d2.jpeg) ---
**Author:** ![Newbiedude](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/newbiedude/32/558827_2.png) [@Newbiedude](https://ilgmforum.com/u/Newbiedude)\ **Post date:** [August 10, 2021, 11:12pm UTC](https://ilgmforum.com/t/light-meter-for-android/72730/13 "2021-08-10T23:12:18Z")
i use the photone app. just a note about what i have discovered with it. you need to really clean the screen good in the area of the camera. i get erratic readings with it if i don’t clean it. ---
**Author:** ![pillsbury](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/pillsbury/32/445586_2.png) [@pillsbury](https://ilgmforum.com/u/pillsbury)\ **Post date:** [August 10, 2021, 11:38pm UTC](https://ilgmforum.com/t/light-meter-for-android/72730/14 "2021-08-10T23:38:38Z")
I have both loaded on my phone I like the 1st one you posted as it does PPFD & DLI. I do question its accuracy but I only use it for guesstamates, an I won’t be paying $500 for a good one. I used the back of my hand to test light strength before this an still check with it too. ---
**Author:** ![Newbiedude](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/newbiedude/32/558827_2.png) [@Newbiedude](https://ilgmforum.com/u/Newbiedude)\ **Post date:** [August 11, 2021, 2:14am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/15 "2021-08-11T02:14:42Z")
i don’t know anything about that first app, but when looking at that photo it shows it’s giving a reading as though it’s looking at a 6500K light. maybe that’s what your running, maybe not but i would venture too guess that the reading may be pretty far off. don’t know, just an observation. ---
**Author:** ![Allinherhead](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/allinherhead/32/525479_2.png) [@Allinherhead](https://ilgmforum.com/u/Allinherhead)\ **Post date:** [August 20, 2021, 4:44pm UTC](https://ilgmforum.com/t/light-meter-for-android/72730/16 "2021-08-20T16:44:29Z")
The first is what I use. You have to check the menu and select the light source you are using. ---
**Author:** ![Dclark](https://avatars.discourse-cdn.com/v4/letter/d/b782af/32.png) [@Dclark](https://ilgmforum.com/u/Dclark)\ **Post date:** [August 21, 2021, 10:44am UTC](https://ilgmforum.com/t/light-meter-for-android/72730/17 "2021-08-21T10:44:22Z")
Yes Dave it is I have a blackview a80 plus Android 10 and it has the photone app downloaded