IAN LYNCH SMITH, a shaggy-haired ball of energy in his late 30s, beams as he ticks off some of the games that Freeverse, his little Brooklyn software company, has landed on the iPhone App Store’s coveted (and ever-changing) list of best-selling downloads: Moto Chaser, Flick Fishing, Flick Bowling and Skee-ball.

Skee-ball, Mr. Smith says, took about two months to develop and deploy and then raked in $181,000 for Freeverse in one month. The company’s latest bid for App Store fame? A game featuring a Jane Austen character in a lacy dress who karate-chops her way through hordes of advancing zombies.

“There’s never been anything like this experience for mobile software,” Mr. Smith says of the App Store boom. “This is the future of digital distribution for everything: software, games, entertainment, all kinds of content.”

As the App Store evolves from a kitschy catalog of novelty applications into what analysts and aficionados describe as a platform that is rapidly transforming mobile computing and telephony, it is changing the goals and testing the patience of developers, bolstering sales of the Apple motherships the applications ride upon  the iPhone and iPod Touch  and causing Apple’s competitors to overhaul their product lines and business models. It even threatens to open chinks in Apple’s own corporate armor.