LogSynth vs SL CastShift

LogSynth is a polyphonic virtual-analog synthesizer built for people who care what's actually happening in the signal path, not just what the preset browser looks like. Every voice runs five anti-aliased oscillators (sine, triangle, saw, pulse with PWM, and a band-limited impulse train) plus a dedicated sub-oscillator and noise source, mixed per-voice with independent amp envelopes. Chunky oscillators, crisp effects and a zero-delay-feedback state-variable filter — switchable low/high/bandpass. The drive effect is powered by a physically modeled diode circuit, numerically integrated rather than a lookup-table approximation, so pushing it into saturation behaves the way an actual analog drive would. FEATURES - 8-voice polyphony, 5 oscillators + sub + noise per voice - Zero-delay-feedback state-variable filter with resonant feedback and diode drive saturation - 5 independent oscillator envelopes plus a dedicated filter envelope - 2 assignable LFOs and an 8-slot modulation matrix - Built-in chorus, delay, FDN reverb, and 4-mode distortion - 41 factory presets across Bass, Lead, Pluck, and Effects - One-tap patch randomizer with adjustable intensity - Real-time oscilloscope, on-screen keyboard, and CoreMIDI input - Runs standalone or as an AUv3 instrument inside AU hosts Whether you're sound designing from scratch or dropping it into a DAW as a plugin, Logsynth gives you the same engine everywhere — no watered-down mobile version, no feature gating between standalone and plugin modes.

Give your audio a different voice. SL CastShift is an AUv3 audio effect for iPhone and iPad that combines six transmission and media characters in one sound-design workflow: Radio, Phone, TV, Walkie, Megaphone and Codec. Start with 18 factory presets, three for each mode. Shape the result with Drive and Mix, high-pass and low-pass filters, Bass, Mid and Treble, then add Age, Distort, Bitcrush, Noise, Wow and ambience. Each preset recalls the complete sound. The AI control blends local adaptive processing using embedded neural models. Processing runs on your device, with no cloud inference or model download. Use CastShift as an AUv3 effect on an audio track in a compatible host. Feed it vocals, instruments, loops or sound effects and compare the six modes. This is an audio effect, not a MIDI instrument: it needs an audio source. The interface adapts to iPhone portrait and landscape, iPad and compact host windows. The standalone app does not automatically enable microphone-to-speaker monitoring. For processing audio from another music app, load the AUv3 extension in a compatible host.