Start to finish party planning site Punchbowl is taking its platform mobile today with the launch of an iPhone app and a new mobile site for smartphones. Punchbowl's platform allows users to create beautiful online invitations and track RSVPs. The startup also provides tools that let you find supplies, organize an after party and even set a date, via an algorithm that recommends the best date for your party. The site also allows you to set up gift registries, save-the-dates, message boards, integrate Google Maps’ to display the location, and share comments, photos, and videos.