Well, if you have no idea of which problem to solve, I believe that nugget is still a thing. Every time I stumble upon someone that tells me that "all the problems have been solved" I tell them: check out https://nugget.one and let's talk again. If I recall, I stumbled upon that site when I was with Startup School. _^. Source: over 2 years ago

The Digital well being app really restricts your app use once you set it in the app's "focus mode" function. Try this too. Source: about 1 year ago

Yes it is called Digital wellbeing. You can set app timers, screen time goals, and focus mode. Per checking there is also Focus, Scheduled summary and app limits on IOS. Source: over 2 years ago

> It's all about which company can screw the other out of engagement and eyeballs. You could argue that Apple is acquiring users who they then lock in, sell to advertisers and developers (for a 30% cut on the App store) and monetize with service subscriptions, but you can also argue that half of Apple's profit is still from hardware sales, and apps and services are a big reason for buying that hardware. And Google... - Source: Hacker News / almost 3 years ago

If you have an Android phone think about installing some of Google's wellness apps -. https://wellbeing.google/. Source: about 3 years ago