Terrarum iOS audio tools by Joe Topjian
7 apps shown
Perc8 · Drum Synthesizer
Perc8 app icon

Perc8

AUv3

An eight-voice drum synthesizer and sequencer with pattern, chain, FX, and master editing. The site also includes the full manual and the two built-in tutorials.

Pattern chain workflow Full manual 2 tutorials
Open Perc8 Page Read Manual View Tutorials
What it is
Eight independent voices for drums, percussion, and tonal parts.
Workflow
Shape sound in Pattern, arrange in Chain, polish in FX and Master.
Docs
Manual plus two step-by-step tutorials, all on-site.
MIDI Sequencer
GridStep app icon

GridStep

MIDI

Step sequencer with deterministic playback and host-controlled MIDI routing.

AUv3 Host-synced MIDI only
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MIDI Instrument
Lattice app icon

Lattice

MIDI

Grid traversal pattern generator with playable controls for melodic motion.

AUv3 MIDI only Performance
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Audio Effect
Console app icon

Console

Rivet 01

Console-style saturation and distortion for synth, bass, and drum bus processing.

AUv3 Saturation Tone shaping
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Audio Effect
Room app icon

Room

Rivet 02

Driven room reverb with ducking, smear, and tone controls for dense mixes.

AUv3 Reverb Parallel blend
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Audio Effect
Verb app icon

Verb

Rivet 03

Three-engine algorithmic reverb with drive, degradation, and rhythmic gating.

AUv3 3 engines Drive + Grit
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Audio Effect
Comb app icon

Comb

Rivet 04

Comb-filter effect with controllable resonance, feedback, damping, and stereo spread.

AUv3 Comb filter Resonance
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