Check this out - animations for switching between applications.
iOS, as we know, comes with the stock animation for application switching that kind of shuffles the applications around like each application is a card; the animation is horizontal by default. Now, thanks to a new jailbreak tweak dubbed Jepit by iOS developer VincenzoBB, we have the ability to customize our switching animation by just flipping a couple of switches. Above is a screenshot showing all of the switches that you can control from the Jepit settings which are made available to you after you install the tweak from Cydia.
The list isn't too long, however there is a good number of settings to get by with. The first switch lets you enable and disable the custom animations entirely. The rest of the switches in the top section have to do with different kinds of animations. The first one, rotation, does not work on the iPhone. App fade makes the application you are in turn into a black screen and then change into the application that you are switching to. Vertical uses the stock iOS app switching animation, but the animation is vertical instead of horizontal. There is an iPad version for this setting too. Below that are two other animations that let you choose between a vertical or horizontal stretch - these animations basically take your screen and stretch it until the next application you are switching to appears. Below is a demonstration video of some of the animations:
Under the animations (also demonstrated in the video above) exists a second group of settings which have to do with animation speed. The three speed levels are slow, fast, and very fast. Above that is a setting that lets you enable and disable your custom speed. From testing, the speed change is only really noticeable on some of the settings, for example the vertical animation.
Apart from what the tweak does, there are a couple of problems with it. For one, Horizontal is not spelled right when you look at the last animation, "Orizzontal stretch." Also, the rotation animation seems to revert to the App fade animation on the iPod touch and iPhone - this probably has to do with the fact that Rotation is not compatible with the iPhone. It seems to be for iPad only because it will not work on the iPod touch either. Some of the animations are a bit glitchy in appearance in that they aren't exactly fluid. Changing the speeds can make this even worse where it becomes so glitchy that it lags at times.
As long as you are selectively careful with which options you select in Jepit, you might enjoy it. I don't think it's a terrible tweak by any means, but there are certainly some bugs that should be addressed. It's likely that we will see an updated version that flattens out those bumpy issues. Since it lets you customize a feature of iOS that we rarely pay very much attention to, it's a handy little idea to brighten up our user-experience. I think that a good idea for the next update would be some graphical optimization and added animations. Try it if it sounds interesting to you!