title: implement tesseract OCR in iphone
body: <p>i want to implement handwriting recognition in my project </p>
  
  <p>for example when user writes <code>A</code> on the screen, then screen should display <code>A</code>,</p>
  
  <p>i had searched on google and so far i have found, <code>tesseract OCR</code>, but i am not getting what is <code>tesseract OCR</code> and how to implement this in my project can someone give demo tutorial of <code>tesseract OCR</code> and i don't know whether <code>tesseract OCR</code> is free or paid ...</p>
  
  <p><strong><em>can someone give idea about <code>tesseract OCR</code> !!</em></strong></p>