Idea: Smartphone usage limits An app for smartphones where you | Startups & Ventures

Idea: Smartphone usage limits
An app for smartphones where you point out how much time a day you should have your screen enabled. Or time per one session.

Say, I want to limit my smartphone usage. So I configure this app to have only 1.5h a day, and when I spend all of it, I can't use my phone until there's an emergency(to use Google Maps, respond to a call, etc.). The other use case is when I don't know how much time per day I should limit, but I want to decrease smartphone usage time per session. For example, I may spend time watching YouTube or scrolling the Twitter feed, so I want to limit sessions to 5 mins.

The app may punish me if I exceed the usage. For example, it may block the distracting apps for the whole day. On the other hand, it also could reward me if I were obedient to the rules for three days: the app might give me additional minutes per session for the next day.

Of course, there are similar apps that block distracting apps. The problem is that they can be annoying, and you may decide to uninstall them. Or skip the warnings and notifications. Such apps should be more flexible and "smart" to help you. For example, a rewarding system might have a significant impact. Or the changing and insightful warnings if I violate the rules. So it won't show me the same message that I'm a terrible person, but it will tell something like: "if you continue spending additional time like you did today on YouTube, you'll waste weeks per year".