Body acid version? Not sure I want to use THAT.
Do note that there are several limitations in place, because what's the point of buying SmileBASIC if you can do everything in the demo?
- You cannot normally save a program. There are a few ways around this, and I've heard some people even made a SmileTool to SAVE and LOAD files just as quickly as the editor.
 - You cannot create projects, and you cannot change projects. Projects, of course, referring to SmileBASIC's folder structure. You can only save programs in the [DEFAULT] folder, and you can't switch to anyone else's project and check the source code... unless you try very hard.
 - You can only download 1 project every 8 hours. This is a limit that is also present in the full version of SmileBASIC, but only if you don't have a server ticket. (Don't worry, the server ticket is included in a bundle for a reduced cost!)
 - You can only save 32MB's worth of projects. This is very small, as the default for a normal installation of SmileBASIC is 64MB iirc. You'll run out of space quickly, so don't be afraid to delete a few projects every once in a while.
 

 * I already basically made that joke several months ago