Auraglyph is an audio software programming, composition, and design system for iPad in which processing structures are created with stylus and multitouch input. Via stylus input, users draw a variety of audio and control nodes and the interconnections between them. These nodes are further parameterized by modal handwritten input, from simple numerals to time- and frequency-domain signals. Machine learning-based handwriting recognition is used to analyze the user's stylus strokes, affording a rich vocabulary of symbolic input. Additional nodes are available for creating conventional input/output interfaces, such as on-screen knobs and sliders and MIDI I/O.