Note: Wi-Fi Sync is no longer under development, and it is no longer available for sale.Wi-Fi Sync enables wireless syncing with iTunes at the touch of a button. Never go looking for that USB cable again. Sync from the car, bed or shed whenever it suits you.
Available now on the Cydia Store for iPhone, iPod touch and iPad. You won't find it on the App Store. The app costs $9.99.