RiffNode

Professional guitar effects app built entirely with native Apple frameworks, selected as an Apple WWDC26 Swift Student Challenge Winner (one of 8 in Taiwan, 350 worldwide). Features a dual-AI tone engine with on-device Apple Foundation Models, a low-latency AVAudioEngine pipeline driving 11 effects in a drag-and-drop signal chain, and hands-free control via Vision Framework face gestures with real-time vDSP FFT analysis and pitch detection.