iOS beta testing on the fly. iPhone Application UI Design Patterns ~ Flyosity by Mike Rundle. Update: Changed the blog entry title to reduce confusion.
The iPhone is one big constraint — no keyboard, small screen, few buttons — so designing applications for the iPhone is an exercise in building smart, simple software. Bloated apps on the iPhone? You won't find many. Most applications pick one feature or group of related features and centralize the product around that central theme. Designing for the Retina display. Branding and interactive communication, identity strategy and graphic design.