Hey, we didn't say that you would find every one of these apps within the App Store itself. Because one of the iPhone's most important applications is one you find in any Apple-sanctioned emporium--, the installer application for jailbroken iPhones and iPod touches. It's through Cydia that you can install tools for accessing the complete contents of your iPhone or iPod touch as well as add applications that provide capabilities not provided (or allowed) by Apple. With Cydia installed, jailbroken iPhone can shoot video, tether, stream video, download YouTube videos, file applications into folders, bear a customized interface, and much more (Free; ).

The iPhone platform is fast becoming a gaming juggernaut, rivaling the Nintendo DS and Sony PSP in capabilities--and dwarfing both platforms combined in terms of the number of available titles. But among the iPhone's most compelling games is one of the simplest: . An onscreen airfield features two runways and one or two helipads; as planes and helicopters appear on the screen, you use your fingertip to create a flight path from each to its proper landing site. Sound easy? It is until your airspace starts to get crowded, forcing you to manage those flight paths to avoid collisions.

The graphics are delightfully retro, the gameplay is dangerously addictive, and the app tracks a number of interesting stats that spur you to improve on your personal best (and compare it with others' online). The game also remembers where you left off the last time you quit, making it perfect for a few minutes of fun during your commute or while waiting in line. The developers aren't resting on their laurels, either: Flight Control was one of the first apps to embrace iPhone 3.0's peer-to-peer networking, letting you share your tower duties with other iPhone and iPod touch owners ($1; ).