For people that don't know Installous is an installation package for jailbroken iPhones, iPads, iPods, and other Apple devices that allow users to install “illegal” applications. Illegal applications refer to unofficial applications and those that other Apple users have cracked. This means that Installous previews Apple applications before they are purchased. Installous is free and can be downloaded via Cydia, the online database of portable device applications.
It can be downloaded in Cydia by adding the source www.Cydia.Hackulo.us