This looks like a very useful upgrade, though I think I’ll hold off until others have reviewed that the R measurements are fairly accurate.
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I have observed that it is not always good to be on the early adopters list for new tech.
But I just couldn’t help myself on this one.
Sometimes a version 1.0 of a device is better than a version 2.0. Not always, but sometimes. Only one way to find out!
I am jealous…
Just want to know if there is an app that works with it… and how well.
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Edit 5/2023: Note: DO NOT BUY - Wait and see if problems are resolved.
Initial testing with low CCT, high CRI LEDs like Nichia’s yielded results that seemed to be “in the ballpark,” but subsequent check with higher CCT, low CRI LED’s revealed big problem HERE.
The Opple Lightmaster 4 could give erroneous values in all the important parameters such as CRI, R9, Duv, CCT. Company is trying to correct problems but as of 5/2023 there is no fix.
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Wow. It’s everything that we’ve been hoping and asking for.
Box has a QR code that you scan, that basically takes you to download Opple Smart Home app. I’ve already done the registration and signing in previously so for me no further work. I don’t recall that exact registration process sorry.
And boom! It works: Ra, R9, in fact all the R’s, continuous Duv reading, no more waveformlighting 
. I’m thrilled. First on the block would be of course Convoy S21D with legendary 219b 4500k. Will post pictures.
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Simon’s Nichia 219b 4500k in S21D. R9080 LED and now we finally get to see it.
Triple digit negative Duv, minus 103, as expected of the king of rosy tint.
The Opple 4 slides more easily and clicks into place more “clearly” than my 2 Opple 3’s.
(I merged two screen pictures into 1.)
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Duv reading is now instantaneous and continuous so I fix light and sensor in place and could watch Duv drops as the light heats up, especially dramatic with Nichia 519a. And rises when output drops. (Sorry about the shoes; I do Duv test in my closet.)
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That’ll save about 5-10 minutes each time I measure 3-5 modes of a torch.
No more typing x, y values and copy/pasting.
Then again, is it worth mentioning x and y for posterity?
CCT, CRI, duv vs CCT, CRI, x, y, duv
will still want to use waveform to plot the spectrum chart, as the one on opple does not plot the DUV correctly, but its great it calculates the DUV automatically
I really look forward to having the ability to compare the R9 of my LEDs,
How long did it take to get to you? This thread is only 9 days old.
afaict, he bought the day the thread started
9 days from order to delivery seems like a new record
mine took 3 days to reach Los Angeles from China
then 4 days to reach Texas,
Im 600 miles away
it might get to me in another 2-3 days
if USPS does not lose it at the sorting center
(USPS has lost two of my packages this year)
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And here I was thinking the 11 days my last Aliexpress order took was impressive.
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Thanks for sharing, this makes me happy I ordered one to replace my version 3. It’s left facility in LA so should be here fairly soon.
Agreed, this has been quick. Mine is on the way to the post office already.
1st bug report confirmed… the Spectrum Plot does not work. Maybe Opple will updated the App…
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There seems to be a big problem with my Opple 4. Measurements of Duv are significantly more negative in some of the higher CCT, high power lights I’m testing. I’m checking my other lights to confirm but anyone please check your Opple 4 to see if I just got a lemon. So I could stop doing this tedious work.
Initial testing with 219b seems good, but when I measured my Mateminco and Nightwatch I started seeing some very negative Duv that’s not consistent with beamshot, or previous measurements by me or other reviewers, etc. Examples:
Mateminco PD90S, my two Opple 3’s show a Duv range of around positive 0.0017 to 0.0030; Dave reviewer on 1 lumen has positive 0.0040, but my Opple 4 reads negative 0.0036. I’ve never seen anything remotely negative in my collection of Chinese LED’s, let alone such a big negative number.
I decided to measure a well known light with a commonly used LED, my Wurkkos TS30S w/ SBT90.2 and here so many numbers seem off. SBT90.2 is known to have a green tint and typical Duv I’ve seen is positive 0.0040 and up. Here it is minus 0.0035, very obviously wrong by a wide margin. Besides the Duv, the Ra seems off from what I’ve seen and measured (around 67), R9 of 100 in this LED known to have a green tint and low Ra - is that possible? For CCT, this LED in general has CCT around 5100-5500k AFAIK, and with my blue reflection AR it goes up to ~5700. I personally have never seen 6000k.
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Well since they are using different apps it should be easy enough to put the 3 and 4 side by side but you will need two different phones to do it. Then you’re able to look at both screens at the same time in the same beam.
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Yes I used two phones, two Opple 3’s, and the Opple 4. The comparison is not just to past values of SBT90.2 with Opple 3, but with simultaneous present measurements with Opple 3 and Opple 4 as well.
Opple 3 measurements past and present show no change. Opple 4’s measurements are way off, most severely on Wurkkos TS30S.
It could simply be that I got a lemon. I hope that’s the case.
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