Is anyone working on something related to decreasing/controlling the amount of time people use their phones?

I'm aware of the CPH Foundation, but I'm wondering if there are more ambitious efforts underway.

E.g., I want to believe that there's a market opportunity here: if there were an alternative to Android/iPhone that would only have "non-addictive apps," I would definitely choose that brand for my kids' phones.

Another less ambitious idea: create a certification/standard, kind of equivalent to "Fair Trade," for "non-addictive," or "ethical towards the user," that would apply to apps that fulfill certain minimum requirements.