title: Do external libraries make apps slower?
body: <p>I am building an app that scrapes information from web pages. To do that I have chosen to use an html scraper called <a href="http://jsoup.org/" rel="nofollow noreferrer">Jsoup</a> because it's so simple to use. Jsoup is also dependent on Apache Commons Lang libray. (Together they make up a total of 385kB ).
  So Jsoup will be used to Download the page and parse it.</p>
  
  <p>My question is if the use of these simplifying libraries, instead of using Androids built-in libraries, will make my app slower? (in terms of downloading data and parsing). </p>
  
  <p>I was thinking that the internal libraries would be optimized for Android.</p>