iPad: While you’ll find no shortage of visual-effect apps in the App Store that take advantage of the iPad touch screen, Thicket is polished, fun, and best of all, free.
Thicket allows you to control both the visual and audio elements simultaneously; as you move your hands you create both the string-based creations and the matching audio track. The default mode is Sinemorph, you can add on additional packs for $0.99–we tried them all out but enjoyed Sinemorph, the free base pack, the most.
Have favorite audio-visual touch screen app like Thicket to share? Let’s hear about it in the comments.