lfoch is an experimental LFO generator designed for iPhone, offering unique capabilities for creating complex waveforms. With two LFO generators featuring phase and ring modulation, users can manipulate sound in innovative ways. Each generator includes two suboscillators that allow for intricate modulation of waveforms, with options for waveform rate, type, and nonlinear curves. This app supports multiple outputs, enabling users to generate MIDI control change values from the resulting waveforms.

The app provides two operational modes: 'perform' mode, which offers a streamlined interface for live usage, and 'edit' mode, which presents all controls on a single screen for detailed adjustments. Additionally, lfoch can sync with tempo, allowing for precise speed control, and it functions as both a standalone app and an AUv3 MIDI effect, supporting parameter automation and preset saving. However, the standalone version does not output MIDI in background mode.