PAR meters tested. $8 iPhone app, $170 and $500 meter

DrDukePHD said:

The app is 150 off basically right and it reads high. We can get a good idea from that, thanks iggy!

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iggy097 said:

It doesn't read high as long as you use the 22# white paper. It reads perfect.

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DrDukePHD said:

Yea that's super cool. $500 saved eh? Wonder if Android is as accurate, without the diffuser.

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iggy097 said:

I originally did this comparison with standard copy paper - which is 22# weight. After posting my results on Reddit, a developer asked me to try some different paper. What I learned - if you are going to use this app to measure PAR - it seems to be very accurate - even compared to the high end Apogee. HOWEVER - the developers should/need to mention that in order to get accurate results you MUST use 22# paper, which is not standard copy paper.
The instructions in the app say "Use regular matte white printer paper (22lb or 80g/m2) - 22lb paper is not the standard paper, and most users are most likely not going to have it readily available.

Video if anyone is interested -

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Mumbeltypeg said:

so get the right paper and this is a
good Budget option then?

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iggy097 said:

Correct

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iggy097 said:

I originally did this comparison with standard copy paper - which is 22# weight. After posting my results on Reddit, a developer asked me to try some different paper. What I learned - if you are going to use this app to measure PAR - it seems to be very accurate - even compared to the high end Apogee. HOWEVER - the developers should/need to mention that in order to get accurate results you MUST use 22# paper, which is not standard copy paper.
The instructions in the app say "Use regular matte white printer paper (22lb or 80g/m2) - 22lb paper is not the standard paper, and most users are most likely not going to have it readily available.

Video if anyone is interested -

Click to expand...