Is there an app that blocks other apps for a certain amount of time so I don't become distracted?

[Hayden Storms]

Actually, I know there is, but I can't remember what it's called. I'm not looking for an app that just makes you put in a password in order to get into it. I want to be fully blocked off from distracting apps like games, ifunny, texting, etc.
I just want to be able to block the apps for a certain amount of time, so if I wanted to study or do homework for 30 minutes I could just block the apps for 30 minutes.

[Averi Bluth]

You can use parental controls or call your service provider I am pretty sure they can block stuff for you.

[Ephemerist]

I *haven't* tried this utility yet but I was interested in the topic so I watched all of the tutorial and sample videos. It gets good reviews, has been around for a few years, and has no 'malware' or other bad features.

This utility will select windows and click the items you need to put yourself unavailable, or mute, or whatever it takes to DO YOUR HOMEWORK!! LOL!!!

I don't know what the limitations are on the trial versions either, but even the $ versions are very reasonable.

http://www.autokeybot.com