Is there an iphone app that prevents procrastination?

I want an app that blocks websites i choose for a specific amount of time so i can get more work done in school. I have something that does this for my llaptop that prevents me from web browsing but is there anything on the app store that could do the same?

thanks

Added (1). alien - because I can just turn it back on? I want something that forces me not to be able to web browse for a certain amount of time.

i asked for apps, not alternatives.

How to maintain a signed iPhone case?

I'm going to a concert and I'm planning on getting some of the artists to sign the back of my hard plastic iPhone case with one of those silver Sharpies. How can I preserve the signatures? Nail polish or something?

MY APP NANA INVITATION CODE (a2199736)?

Do you have or want app nana?

Check out this cool app, open Safari and go to appnana.com on your iPhone or touch. It gives apps like Angry Birds, Fruit Ninja for free. You can also get free $5, $10 and $15 iTunes, Amazon Gift Cards as rewards. Input my invitation code a2199736 we both can get 2500 points.

Iphone 5 headphone speaker jack problem?

I was outside and dropped my phone and i think a little water got inside it. It thinks the headphones are plugged in when they are not. I took a paperclip and tissue and shoved them inside to get the water out… Except the tissue ripped and is now jammed at the bottom of the jack…

The speaker works now but when i put the headphones in they don't go in all the way. I can jam them in which makes them work but then when i unplug them the phone thinks they are still in. Any ideas on how to get the little bit of tissue thats stuck at the bottom?

How to connect wii to my mobile hotspot?

Okay so i've been having problems connecting my wii to my personal Wi-Fi and after spending two hours doing everything i could think of and anything else that i found online i gave up and decided to use my personal hotspot from my phone. I've been looking up how to make it works and it doesn't seem very different than setting up a normal Wi-Fi connection. But it just won't work for me. I'm beginning to think my wii is just broken or something. I get error 51331 or something like that EVERY time. All i want to do is watch netflix on my wii and i can't! If anyone has been successful in connecting their wii to an iphones personal hotspot pleaseplease help me i'm so annoyed

USB not recognized when iPhone is plugged in?

I just updated iTunes to 11.1.4 and now it doesn't recognize my iPhone4s when plugged in - I get USB not recognized. I had the problem also with iPad but it was recognized just not in iTunes. I re-installed the driver and now the iPad is fine. Since my computer doesn't even see recognize the iPhone I can't re-install the driver. I'm sure its possible but don't know how. Have searched all over and nothing is working - any suggestions?

IMessage won't activate after jailbreak iOS 6 iPhone 3GS?

So here's what happened

My old 3GS's digitizer no longer worked for whatever reason, so I decided to get another 3GS off of eBay. When my carrier plan expires I'm switching to another carrier so I thought that it would be better to spend 80 bucks on a used decent phone rather than buy a new iphone 5s and spend all that money. Anyways, the seller failed to notify me that the unlock was done by jailbreaking and jailbroken to a ios4 firmware so I had to re-jailbreak it to ios6. (I used redsn0w) That's when iMessage problems started. It always says "awaiting activation" or whatever and then a few minutes later itll tell me that it was unsuccessful and to try again. I searched the web for hours and tried everything, but still nothing works. I'm hoping to find an answer here. Thank you in advance, let me know if you need any additional information

Can an unlocked iPhone 4s from Amazon be used with Boost?

I want to buy an unlocked 32 GB iPhone 4s from Amazon because they are cheap. But I'm wondering if I could use it with Boost? I've seen some people say you can't because it's GSM. I don't know what GSM is, so please explain, and would this be legal?

If I jailbreak my iPhone, can I trick Sprint into not roaming?

Hello… I'm moving to a no-service voice and data roaming area with my Sprint iPhone 5c. I have jailbroken phones in the past, but am only considering it now if there's a tweak to essentially make my provider think that I'm not, in fact, roaming. I have unlimited data, but I was in a similar situation when I was sent out to the desert this summer for work and Sprint threatened to cut me off due to the amount of 'unlimited' data that I was using. Unlimited data, it would seem, does not exist if one is roaming. SO. Just curious if this is plausible. Yes, I'm aware that this is illegal, I'm a bad person and Apple will hate me forever.