Thoughts on the illuminati im150 & Lumu Light Meter

[Ty Harper]

I know the Sekonic c800, c700 (etc) are the pro standard, with few performance complaints. I've also seen tons of threads with people automatically dismissing app based options like the Lumu light and illuminati im150.

I'm wondering if anyone has actual real world repeatable experience with the Lumu or illuminati, and can speak to the efficacy of either of these two color measuring options, especially considering that they're a fraction of the price of the Sekonic stuff. 

Thx.