Punchbowl is a great service for sending invitations, but the app leaves a great deal to be desired. You have to re-log in every time you launch the app; it never saves your credentials, or even your username, from use to use. The interface has some handy shortcuts, but appears to mostly just be a skinned version of the mobile website. As a result, if youre not on a blazing fast connection, it causes the entire app to hang if its downloading lots of information at a time. Theres a lot you cant do from the app, as far as I can tell, too, that you can do on the website. Its an improvement over their first attempt, and I use it to remind myself of RSVPs on the go, but overall, this could be a LOT better. Very disappointed in Punchbowl on this.