Apps: LH Rubbing (Subtractive Synthesizer iPad App) 2013 • Launched in 2013, LH Rubbing is a professional electronic synthesizer app designed for music producers and synthesizer enthusiasts. Users can create and synthesize their desired electronic timbres, and use it as an electronic instrument for live performances. The app handles DSP, UI design, and sound production. It received an App Store editor recommendation. LH Grain (Granular Synthesizer iPad App) 2013 • Launched in 2013, LH Grain is a granular synthesizer app for the iOS platform. It features a granular synthesis sound engine and the development of various effects, including reverb, chorus, resonance peak, filters, ring modulation, edge effectors, and distortion. LH XYZ (OSC Signal Sender iPhone App) 2013 • Launched in 2013, LH XYZ is an app that supports the OSC protocol. It sends gyroscope and accelerometer sensor signals from the phone to a receiving end for further control. In 2019, it added an artificial neural network motion recognition feature. XII (Algorithmic Composition and 3D Audiovisual iPhone iPad App) 2014 • Launched in 2014, XII is an automatic composition and sound visualization app based on the 12-tone composition theory. Developed using the Openframeworks library and C++ programming language, it provides real-time 3D visual images that respond to music changes. LH Tuner (iPhone Tuner App) 2014 • Launched in 2014, LH Tuner is a tuning app that allows users to detect the pitch of musical instruments and tune them accordingly. It targets students learning to play instruments and performers. The app features pitch recognition, temperament offset algorithm, basic waveform generation, and customizable piano keyboard. TunerMetro (iPhone/iPad Metronome and Tuner App) 2015 • Launched in 2014, TunerMetro is a combined metronome and tuner app that provides accurate pitch recognition and beat calculation. AI Style 2019 • AI Style is a photo style conversion app based on artificial neural networks. It includes 11 pre-trained neural network models for mimicking famous painting styles. The app uses pre-trained model interfaces, real-time data collection, and logical judgments.