Making an app was trivially easy and aside from the intro text (due to it being a demo) it was nice to see there weren't extra instructions a la "please select from the following options." Of course in testing this I made the old "orange you glad I didn't say banana?" knock knock joke that switches paths on the third time.
Yeah, sharing links to your apps should work. If you make an app without creating an account, it is publicly shareable for about 1 day. Whoever creates an account to save it will take ownership, and then it becomes private.
I'm not sure if this will work for everyone else since I didn't create an account, but I guess you can try here if you'd like: http://quickfuseapps.com/app/edit?x#a=5WNw04UUdu0,r=1go