Our favorite file storage app-shoots files to the iPhone's flash memory via Wi-Fi for storage, transport, and easy retrieval.

Amazon's usually the first place I look during a fit of impulse buying, which their iPhone app now makes stupidly easy.

Terribly violent little casual game, to birds. A terrible addictive little casual game, to humans.

More free radio content than any actual radio could ever have. Tailored radio stations are great, sure, but old-fashioned programmed stations—AOL Radio's specialty—have their charms.

An exceptionally shiny first person shooter optimized for the iPhone 4, with slick, functional controls.

It's the first panorama app I've seen that doesn't limit the image size to the camera size. You can paste together some seriously large photos with this.

Expensive? Sure. Totally essential for messaging hounds? Yup.

Want to use your iPhone, but hate Google? You can sort of do that!

Generative, ambient music by Brian Eno. If I need to say more, it's also a mini-sequencer: Drop your finger on the liquidy pastel screen, play a note, make simple loops. Music For Airports that you can make yourself. In an airport, even.

A lot of people buy Nintendo DSes for the sole purpose of having those Dr. Kawashima-approved brain-training games at hand. With this app, you get the exact same mind-juicing benefits for a few bucks, on hardware you already carry.