Password Composer for iPhone

I often use Password Composer (written by Johannes la Poutré) to generate
unique, per-site passwords. It does an excellent job because it's simple,
unobtrusive, and reliable. The one downside is that you need to have it
available in order to (re)generate the password for a given web site, and that
isn't always convenient, despite the large number of existing Password
Composer implementations.

The main place I find myself missing Password Composer is on my iPhone. Theonly current solution...