Review comment: alternative app?

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Ben Meacham • Prior Lake High School, Savage, MN
Chemistry educator. Into Modeling Instruction. Love learning how the universe works. Communicating science is my passion. Always trying to better my profession.
January 16

alternative app?

Tom,

As always, another great idea.  Thank you for sharing this!  

So here is my problem.  Since the time of your post (2016), Apple has pushed out iOS 11.  I was searching for the app the other day that you demonstrated and it turns out that iOS 11 doesn't support this app (of course!).  Are there any other apps that you are aware of, or any other cheap/abundant pieces of equipment that can measure R,G,B light in a similar manner?