There is no need to create a fancy demo building tool. All that is needed is an ability to import an image and define a touch area and navigate to another page. That will be a tool that I will be ready to pay up to $25. There is such a dearth of tools that the SAP demo team has built its own proprietary tool to create an iPad demo from screen grabs. There must be a simple commonly available tool that anyone can use.
I am exploring to see if Keynote for iPad can serve the purpose. I will keep you updated on how that goes.