I've been a fan of 1Password's Mac application for some time.

This implementation for the iPhone is a great for 1.x software. Most of the weaknesses are related to limitations imposed by the iPhone itself. Because the iPhone "sandboxes" it's apps, 1Password uses its own browser in order to pass a username and password to a Web site. The 1Password browser is not the polished experience supplied with Safari, but it is not bad by any means. Also, 1Password can't pass username and passwords to other iPhone applications (again -- the sandbox issue).

Having said that, this iPhone application is a great tool for entering stored password information into Web sites.

I have had none of the crash or sync issues a couple of posters mention. The application runs quite well for me thus far.