Software entrepreneur Phill Ryu has announced “My Dream App,” a new competition that invites participants to submit their best ideas for the next “killer app.” Contestants will compete for a chance to have their idea realized as a Macintosh shareware application and earn royalties on software sales, as well as take home one of many Macs and iPods available as prizes for finalists. Forty popular Mac developers, well-known bloggers, established members of the tech media, top-notch UI designers, and even Apple alumni have signed on to My Dream App as guest judges to provide expert critique on finalist entries. Judges include Digg.com founder Kevin Rose, New York Times columnist and best-selling author David Pogue, former Apple evangelist Guy Kawasaki, and Apple co-founder Steve Wozniak. Submissions are open to all and end Friday, September 1st. After all submissions are collected, the 24 finalists will be announced day-by-day and the first week of user voting will begin on Thursday, September 21st.