Which light source for Photone App?

[QcReef32]

Hey guys, so I am gonna try the photone app by curiosity. I know it’s not 100% accurate. For people using it, do I have to buy the full spectrum or blue/white?

I have a viparspectra
(No coral and no water in the tank yet)
Sorry for my English

 

[tbrown]

Why buy it? The free one works.

 

[tbrown]

Here's a thread that might be helpful. The first post has a link to some instructions that I used.

https://www.reef2reef.com/threads/free-par-meter-photone-app.831059/

 

[QcReef32]

Why buy it? The free one works.

I have a iPhone and I need to pay for the blue/with led or full spectrum source, that’s why

 

[tbrown]

I have a iPhone and I need to pay for the blue/with led or full spectrum source, that’s why

Makes sense. I didn't realize the iPhone app wasn't free. The good news is their cameras are supposed to be better so you might get more accurate results?