iSpirit is specially designed freeware application for iPhone which can be used on your PC for transferring files to iPhone, installing third Application and themes management. You can install theme/third application on your iPhone, and manage the files in your iPhone easily. It works with iPod touch, iPhone, iPhone 3G, iPhone 3Gs,iPad in Firmware1.x, 2.x and 3.x, even without jailbreak. You can use the free to download themes available on iSpirit.
You can browse for variety of themes available on iSpirit and then download it to your connected iPhone or iPod.
iSpirit is a very useful file and theme manager for iPhone and iPod touch.
iSpirit 1.0.6 release, fully supports iPhone 4.