Actually, AppleScript Studio has much of the feel of HyperCard and I'd dearly love to see it on the iPad --- if one wants stacks though, there are (for Mac OS X and / or Windows):
- Runtime Revolution ----
http://www.runrev.com
- SuperCard ---
http://www.supercard.us/
- HyperNext ---
http://www.tigabyte.com/index.html
- PythonCard ---
http://pythoncard.sourceforge.net/
Runrev has announced a mobile version which will be available on the iPad:
http://www.runrev.com/products/revmobile/overview/
I actually did a graphic design utility using Runtime Revolution:
Windows -
http://mysite.verizon.net/william_fr...portionbar.zip
Mac OS X -
http://mysite.verizon.net/william_fr...ionbar.app.sit
William