bitcrust
SID-style polyphonic synth
$1.99
bitcrust is a polyphonic synthesizer built around a SID-style voice architecture: three oscillators per voice, up to twelve voices, with ring mod, hard sync, and the pulse-width behaviour that defined a generation of 8-bit sound. The DSP is an in-house, clean-room implementation written from the public MOS 6581 register map and general DSP literature — not an emulator port — so bitcrust sounds SID-adjacent without inheriting the license constraints that keep most SID-inspired tools off the major app stores.
Sonically the plugin sits between a chip synth and a modern subtractive. The voice core can still do gritty arp basses, zap leads, and 8-bit percussion, but the surrounding architecture — three LFOs, a per-voice modulation envelope, an 8-slot modulation matrix, and a 6-slot post-SID FX rack with drive, bitcrusher, tempo-synced delay, chorus, reverb, compressor, and limiter — extends it into pad, keys, and texture territory.
Universal Purchase: one price buys the Mac Standalone plus the iPad AUv3. The iPad build is a co-equal target, not a downscale — the full 113-preset factory library, all 14 themes, and the complete mod matrix / FX rack ship on both platforms.
Voice core: 12-voice polyphony, 3 oscillators per voice, SID-style triangle / saw / pulse / noise with hard sync and ring mod, per-VCO ADSR
Filter: global VCF (LP / BP / HP) with live curve, selectable 6581 / 8580 chip model, Vintage vs. Modern oscillator mode
Modulation: 3 global LFOs (7 shapes, host-sync or Hz), per-voice mod envelope, 8-slot matrix, MIDI sources (velocity, poly AT, channel AT, mod wheel, pitch bend)
FX rack: 6 slots, drag-to-reorder, per-slot bypass / mix; effect types Drive (5 modes), Bitcrusher, Delay (tempo-sync), Chorus, Reverb, Compressor, Limiter — every FX parameter is a modulation destination
MIDI: 16-step sequencer, arpeggiator (Up / Down / UpDown / Random, 6 rate divisions, octave range), MIDI Learn on every knob, note Hold
Presets: 113 factory patches across 10 groups, full-metadata save (author, description, tags), Preset Preview audition without committing, A/B snapshot compare, XML import / export
UI: 6-tab navigation, 14 themes with optional phosphor / CRT overlays, monitor strip (oscilloscope, vectorscope, FFT spectrum, 3D spectrogram, stereo field), QWERTY note typing from any tab
Mac: Standalone app with universal binary (Apple Silicon + Intel). iPad: AUv3 extension plus a Standalone for headphone jamming. A supported AUv3 host is required for in-DAW use on iPad (GarageBand, Logic Pro for iPad, AUM, Cubasis, etc.).
Support: https://anode-labs.com/bitcrust · support@anode-labs.com
Privacy policy: https://anode-labs.com/privacy
What's new in 1.0.0: First release.
Ratings & Reviews
- Sustain pedal (CC 64) holds notes until you release the pedal.
- Per-VCO Sync Ratio and Sync Detune are now modulation destinations. Sweep, detune, or animate hard-sync tones from any source.
- Modulated knobs show a live arc on the value ring indicating where the modulation is pushing the value. Direction shows polarity, length shows depth.
- Per-step trigger probability in the sequencer. Each step has a 0 to 100% chance of firing. The pattern randomizer (dice button) now fills probability across the full range too.
The developer, Michele Caserta, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Michele Caserta
- Size
- 15.7 MB
- Category
- Music
- Compatibility
Requires iPadOS 17.0 or later.
- iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 26.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPad
- Age Rating
4+
- 4+
- Copyright
- © 2026 Anode Labs

