In version 0.7, Couchapp has a new feature to couchapp allowing you to push, clone and browse CouchApps in the local CouchDB installed with desktopcouch, so ubuntu users (or other linux distributions where desktopcouch has been ported) won't have to install another CouchDB to test and will be able to pair it with other desktop.
to push to your local couchdb installed with desktopcouch:
couchapp push desktopcouch://testdb
To clone :
couchapp clone desktopcouch://testdb/_design/test test1
To browse and use your application:
couchapp browse . desktopcouch://mydb
and with push option :
couchapp push --browse . desktopcouch://mydb