Scratch Disc is an impressive turntablism app for iPhone that takes scratching performances to the extreme. Developed by Kristin Graffagnino, this free app allows users to load up to 12 turntables with any sound imaginable and then scratch it to create rhythms and effects.

With over 200 sounds to choose from, Scratch Disc offers a wide range of options for users to scratch with. Additionally, the app allows users to scratch with songs from their iTunes music library, adding a personal touch to their performances.

One of the standout features of Scratch Disc is its compatibility with AudioBus and Inter-App Audio. This allows users to record their performances directly into other apps, such as GarageBand, Cubasis, and Loopy, expanding the possibilities for creativity and collaboration.

For those looking to enhance their Scratch Disc experience, there are in-app purchases available. These include more sounds and projects, the ability to record yourself or other sounds to scratch with, and the option to paste sounds from other apps.

Overall, Scratch Disc is a powerful and versatile turntablism app for iPhone. With its extensive sound library, intuitive interface, and compatibility with other apps, it offers endless possibilities for DJs and music enthusiasts alike.