Digital fasting: write an Android application that limits the time you can use your apps

Hello, today an idea came to my mind. I want to publish an app, that limits the time you can use certain apps on you Android device. I think it can help the mobile generation to reduce the time spent on smartphones. In Germany we call it "digital fasting". For example: i want to reduce the daily time i use Facebook, 9gag and Instagram from 6 hours to 1.5 hours. So i install the app on my Android device, set the time i want to use these apps and my app automatically logs the time i use Fb, 9gag and Instagram. After the 1.5 hours these apps will quit and i cannot use them until the next day begins. When i try to start Fb, 9gag or Instagram it will show me a message or a popup, that i can't use these until the next day. I have only a few scribbles and the concept so far, so after bidding, it may take a while till i contact you as a freelancer. I am new to App development, so.... Is my project possibly? How much would it cost?