Zephyr is a $5 jailbreak tweak from Cydia that adapts multitasking gestures for the iPhone. With Zephyr installed, horizontal swipes along the edge of the screen will slide you between apps, and upward swipes along the bottom of the screen will exit your current app (or bring up the multitasking bar). As an added touch, Zephyr even changes the Notification Center into a background, instead of a window shade. I no longer pull Notification Center down over my current app – I pull my current app down and reveal Notification Center. It’s a subtle change, but I like it.
There are also a couple of settings to Zephyr, which allow you to fine-tune the experience. You can choose how many fingers are needed for a given gesture, disable gestures while the keyboard is up, or disable the horizontal or vertical gestures entirely (in case you only like using one of them).
Zephyr is one of the smoothest jailbreak tweaks I’ve ever used. The gestures just *feel* right, and the smooth animations make me feel more like I’m sliding between screens, rather than triggering actions. I disabled the horizontal gestures, but I’m loving the upward swipe. A quick swipe up will take me right back to the home screen, while swiping and holding for 0.8 seconds will bring up the multitasking bar. I still use the home button on occasion, but, for the most part, Zephyr has really taken over app navigation on my iPhone. It’s definitely a keeper for $5, and it’s likely to stay on my iPhone for as long as I’m jailbroken.