Edit: To be clear, I set my phone to grayscale a little while ago, so I'm aware that's built in to iOS. I think the additional features that this app idea is proposing on top of that feature are great, but it seems like the app does not yet exist (and perhaps not possible with iOS's limitations).
It's presumed that you have that context before you get here, I guess.
If an app does come out of this, it'll probably be more about setting greyscale for different other apps.
i give instructions for going gray on phones on the website, the app we're developing is desgined to make grayscale easier (whitelisting certain apps that is useful in colour, like google maps, etc).
more context on https://gogray.today
i give instructions for going gray on phones on the website, the app we're developing is desgined to make grayscale easier (whitelisting certain apps that is useful in colour, like google maps, etc).