Scrumulous
Scrumulous is an iPhone/iPod Touch app for Scrum Product Owners and Scrum Masters. It can be used to manage multiple Product Backlogs. Very effectively used with a Scrum Wall or on the go!
Features:
Manage multiple BacklogsManage User Stories within BacklogsPrioritize StoriesSpecify Stories using the "As a, I want, So that" formatAdd Acceptance Criteria to StoriesAdd Point Estimates to StoriesCalculate total points per SprintCalculate total points per BacklogManage Story work statusOrganize Stories into Sprints