title: interaction between apps
body: <p>Hi everyone i am doing Mphil in computer science...i came across that interoperability amoung mobile apps is difficult to achieve...........so i am going to try answer this question in my mphil dessertation.....so thought to make some ground works.....it would be a honor if u guys help me achieving it.....</p>
  
  <ol>
  <li>is it possible for different apps on the same device to interact?</li>
  <li>are there any existing ways to do this?if so what are they?</li>
  <li>is this commonly done in industry? </li>
  <li>if so what are the overheads involved? </li>
  <li>has this been tried by anyone before?</li>
  </ol>