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  • Enable the Nitro JavaScript Engine in Third Party Apps With 'Nitrous'


    In case you have been left out in the dark, Mobile Safari gained the Nitro JavaScript engine in iOS 4.3. The Nitro JavaScript engine in iOS 4.3 made Mobile Safari capable of loading JavaScript up to two times faster than Mobile Safari in iOS 4.2.1 could. One of the biggest beefs with third party Web browsers from Apple's App Store is that they lack this Nitro JavaScript engine because Apple doesn't allow the developers to tap into it.

    If you’re a hardcore fan of iOS applications such as Facebook or Google Chrome, maybe it’s time you get some Nitro JavaScript love added into the mix to help increase your speed. A new jailbreak tweak called Nitrous by iOS developer Joe Jordan gives third party applications access to Apple’s Nitro JavaScript engine by adding the dynamic code-signing entitlement to third party applications.

    Displayed above is a screenshot of the jailbreak tweak’s preferences pane, which can be found in the Settings application just after you install the tweak from Cydia. From the preferences pane, you can enable all of the third party applications you want to take advantage of the Nitro JavaScript engine. Turning them back off again will disable the Nitro JavaScript engine for the applications you turn off.



    As shown above, the jailbreak tweak does increase your speeds by quite a good amount. The browser used in the example is Google Chrome for iOS and before installing the tweak, Google Chrome scored 11614.3 milliseconds in the SunSpider JavaScript benchmark test. After installing the tweak, the test benchmarked 3587.4 milliseconds, which is a substantial drop in loading time.

    If you wouldn’t mind the extra performance boost that might help you load pages a second or two faster in third-party applications than the other guy, then you can grab Nitrous from the Cydia store right now for just 99¢.

    Name: Nitrous
    Price: 99¢
    Version: 1.0-1
    Requirements: iOS 5
    Repo: BigBoss
    Developer: Joe Jordan
    Editor's Rating:  4/5

    Sources: Cydia
    This article was originally published in forum thread: Enable the Nitro JavaScript Engine in Third Party Apps With 'Nitrous' started by Anthony Bouchard View original post
    Comments 50 Comments
    1. bryanchapman9999's Avatar
      bryanchapman9999 -
      Quote Originally Posted by nicoflorin View Post
      i have the same problem, but i habe iOS 5.1.1 untethered JB. When i go to the settings of Nitrous Springboard crashes. Any Ideas?
      Same with me, on 5.1.1 - not happy, was looking forward to this!
    1. xhazex9x's Avatar
      xhazex9x -
      I dont hope it gets fixed it better get fixed i just paid for this p.o.s
    1. lastdance's Avatar
      lastdance -
      The author has a fix. You need to download from his repo, it's version 1.0-4

      The repository is: joedj's beta repo
    1. bigboyz's Avatar
      bigboyz -
      Wow..who wouldn't download it? Im on it!
    1. xhazex9x's Avatar
      xhazex9x -
      Quote Originally Posted by lastdance View Post
      The author has a fix. You need to download from his repo, it's version 1.0-4

      The repository is: joedj's beta repo
      Thanks
    1. jpbl1976's Avatar
      jpbl1976 -
      Quote Originally Posted by lastdance View Post
      The author has a fix. You need to download from his repo, it's version 1.0-4

      The repository is: joedj's beta repo
      UPDATE: it's up to v. 1.0-6 now.
    1. bryanchapman9999's Avatar
      bryanchapman9999 -
      Quote Originally Posted by lastdance View Post
      The author has a fix. You need to download from his repo, it's version 1.0-4

      The repository is: joedj's beta repo
      Nice one, seems to be working for me now
    1. sacred's Avatar
      sacred -
      1.0-7 already. wish there was a changelog though.
    1. cklee92's Avatar
      cklee92 -
      I have installed 1.0-7 but the sunspider benchmark is still the same in chrome or dolphin. Has anyone the same problem?
    1. jps1012's Avatar
      jps1012 -
      Is there any reason not to turn this on for every app?
    1. mortopher's Avatar
      mortopher -
      Quote Originally Posted by jps1012 View Post
      Is there any reason not to turn this on for every app?
      this
    1. Richard's Avatar
      Richard -
      Quote Originally Posted by mortopher View Post
      this
      What. I cant see a reason on my iphone ?

      Is there something missing after This ?
    1. kory108's Avatar
      kory108 -
      After downloading and running the JavaScript tests on webkit.org I'm seeing a 75% increase in Chrome's JS speed, amazing! Chrome and Safari are now reporting almost exactly the same results, 2248 ms for Safari and 2247 ms for Chrome. Chrome's native speed without the tweak was 9098 ms. Definitively worth the $0.99!
    1. Anthony Bouchard's Avatar
      Anthony Bouchard -
      Quote Originally Posted by lastdance View Post
      The requirement is iOS5 and up.
      Yup, but I think it's better for you to be on iOS 5.1.1 right now.
    1. jps1012's Avatar
      jps1012 -
      Quote Originally Posted by jps1012 View Post
      Is there any reason not to turn this on for every app?
      I am not sure if this is definitely the cause but I turned it on for a lot of apps and saw my available memory (not RAM) drop a lot. I changed it to my top 20 apps and gained memory back.
    1. XCFloresX's Avatar
      XCFloresX -
      I was crashing too after installing it but I updated to 1.0-9 now and it's working perfectly.

      Just add this source to Cydia and update- joeddj beta repo
    1. cbutters's Avatar
      cbutters -
      This is literally the best thing ever (this month). Its like facebook already released their new improved version of the iOS facebook app. Really worth the .99c I was skeptical about paying any money at all for this, but now seeing the performance, I would have paid even more for this. The performance is as tangible as when moving from an iphone4 to a 4S.
    1. scarywater's Avatar
      scarywater -
      Best. Tweak. Ever? Totally worth purchasing.

      Major props to the developer!
    1. radioBirdman's Avatar
      radioBirdman -
      Quote Originally Posted by xhazex9x View Post
      I dont hope it gets fixed it better get fixed i just paid for this p.o.s
      It's working very well here (and seems to be for plenty of others too). Perhaps instead of being a crybaby on a review you should send the dev an email (via Cydia including logs) and explain why you think this great tweak is a "POS"...?
    1. iamthekiller's Avatar
      iamthekiller -
      Quote Originally Posted by pratt1503 View Post
      What. I cant see a reason on my iphone ?

      Is there something missing after This ?

      He actually did not say anything or provide any information whatsoever. A trending idiotic thing to do on the internet is to quote other user statements with the word "this", indicating that they "agree" with a statement.