This visual programming environment can compile code to run natively on various platforms, including Windows, Mac, Linux, iPhone, Android, Flash, Windows Phone 7, HTML5, WebOS and more.
Version 4.0 is overdue and so the programmer is saying the current version is available for whatever you like (well, really $US5 and up) until version 4.0 comes out, and that 4.0 will be a free upgrade. See http://blog.radicalbreeze.com/?p=172 - I don't know when this runs out as I don't know how soon the new version will come out.
I haven't used this software, but I've seen some decent reviews on the web (google it). It seems to be actively developed and getting much better with each release.
For more info on capabilities, see http://lunduke.com/?p=1786
For comparison to similar visual programming packages, see http://lunduke.com/?p=1744
Other visual programming packages worth a mention include http://scratch.mit.edu/, http://hackety-hack.com/, http://waterbearlang.com/ and http://msdn.microsoft.com/en-us/vbasic/default.aspx
Not really worth $5 if you're not going to use it, but if you were looking at the demo and enjoying it, go ahead :D