i was wondering if there freehand modelling app where you would draw something like in mspaint but at the same time creating vertices for every pixel , so your able to design shapes how you want freely..

http://www.shapeshop3d.com/ may be what you're looking for. I haven't tried it out but there is a video on the main page that shows how it works.

What you're describing sounds like Zbrush. [wink]