title: Do I need to buy the Qt Framework?
body: <p>I want to develop a C++ application that will work on ALL operating systems. This application will be free until version 1.5 (to make sure it is of high quality). I do not want this application to be open source. The public will only have access to the installer "EXE" and that is it. All source code will be kept and maintained by me, and not under a legal company (for now at least).</p>
  
  <p>So with the information above do I need to buy the Qt framework or can I use the free version? I am always confused with these free license agreements like LGPL and GPL. I can read it a million times and still not know if I can use it or not.</p>
  
  <p>If I can use the Qt for free, in regular non legal terms; what must I do or how will be restricted so that I can see Qt for free. </p>
  
  <p>I really hope I can use the Qt for free, for when this application does cost money I still want to have a free version, with less feature and the paid version will still be very cheap. Not enough to make me rich, just enough so I don't go broke haha. We are talking like $5 for the paid version or something.</p>