Like I said, unfortunately that port is canceled due a cease and desist letter sent to Beloko (the author) so the app cannot be found anywhere, he will never be able to release it.
You can get Delta Touch on Google Apps which is the new version of Doom Touch, to see how the mechanics work by yourself, and you will see how it plays really nice.
Unfortuantely we are stuck with DOS emulation for Duke, so I hope we can get a fine tuned control setup so we can play Duke with DOS emulation on phones.