LightSpectrumPro EVO

★★★★★ One of the best and most accurate meter apps I've ever used. Works great

★★★★★ Works great on the One Plus 7 Pro. Pretty easy to figure out, app does what it says, and the measures appear to be fairly consistent. Question for devs: is it possible to add a feature that provides the numerical data behind the "light color spectrum"? Maybe something than can be exported as a .CSV file? That would be really helpful.

★★★★★ Does what it says, and gives consistent measurements. Can't say anything about accuracy though, as I don't have any other meters to compare it to. There are a few UI/UX issues-can't back out of screenshots; can't delete screenshots; menu is hardly intuitive (maybe is more understandable for pros? IDK.); would not measure on first run; photo metadata is movable, but if you leave it at the bottom of the screen, you can't see it in the screenshots; seems to limit how many screenshots you get.

★★★★★ Awesome apps, budget alternative to an actual Light Meter. You can take light readings when you're accessing a shooting location, that way you know how much lightning you will need and where to put it. Very good Kelvin Meter to get good white balance.

★★☆☆☆ I wasted $3.00 on this app, tried it twice, and then realized that there is absolutely no way a light spectrum analyzer can work with only a digital camera. You have to have something to split the spectrum like a diffraction grating or prism in order to actually to spectrum analysis. The camera has an RGB sensor just like your eye. So, let's say there is yellow at 580 nm wave light. Then there is a mix of red 650 nm and green 550 nm. To the RGB sensor and your eye, they look THE SAME. So, the sensor has no way to tell if it is receiving yellow light or a mix of green and red. It CANNOT work.

★★☆☆☆ Does not work with galaxy j2 pro. Incompatible with camera hardware acording to the error report.

★★☆☆☆ Kelvin meter is not working on my android Samsung A6+. This is the main purpose I needed. Kindly advice. Thanks