Overview

Rating:
4.90 +3
(12)
Version:
1.31
Last updated: 2026-08-04
Ranking
#309,935 27,994
Overall

Features & Capabilities

A horror AUv3 synth and an AUv3 FX in one app. Fifteen machines that crush, filter and haunt. Play them, or run your own drums, guitar and vocals through it.

055U4RY (say it: "ossuary") is an 8-voice polyphonic AUv3 synthesizer and an AUv3 FX, sealed together inside a haunted DOS terminal. A photographic ASCII skull is the front panel: its jaw hinges open with the amplitude envelope, its eye sockets ignite with the output level, and the whole interface tears, melts and reassembles itself while you play.

THE VOICE

  • 15 synthesis engines: detuned saw/square/triangle unison stacks, sine and sub-oscillators one and two octaves down, two-operator FM, ring modulation and inharmonic partials. Every factory preset is a different engine.
  • Twin chaotic LFOs that cross-modulate each other's RATE, so pitch and filter drift never repeats. Held notes stay alive and slightly wrong.
  • A Shepard-Risset layer tuned beneath every note: five windowed partials in an endless downward glissando - the bottomless-pit illusion of classic horror scoring, fused into the oscillator core.
  • A 19 Hz infrasonic tremolo at the edge of perception. On headphones it is a shiver; on a big system it is pressure.

THE CHAIN

  • State-variable filter, low-pass or band-pass per engine, with resonance that will scream
  • Sample-rate reducer and bit-depth crusher for terminal-grade lo-fi
  • Saturating drive stage
  • GLTCH: a real-time stutter buffer that seizes and re-loops your signal
  • CRYPT: a damped, pitch-black comb/allpass reverb
  • GLIDE: exponential portamento up to 1.5 seconds
  • DOOM: one macro that leans the chaos, the descent and the tremor deeper into the signal

PERFORM

  • 14 knobs, all ASCII, every one audible on every preset
  • 15 factory presets with per-preset patch memory: your tweaks persist for each preset, and [RESET] restores the factory sound
  • Two-octave on-screen keyboard with octave transpose and note names
  • Hardware MIDI in (all sources auto-connect), built-in Bluetooth MIDI pairing, pitch bend, MIDI 2.0 aware
  • The skull is your meter: jaw = envelope, eyes = level, decay = how hard you push GLTCH

AUv3 SYNTH + AUv3 FX + STANDALONE Runs standalone with zero setup, and installs as an AUv3 instrument and an AUv3 FX in your host: AUM, Logic Pro, GarageBand, apeMatrix, WBTRK and any AUv3-compatible DAW, with full parameter automation.

One purchase, every platform: iPhone, iPad and Mac. No accounts, no ads, no data collected - your patches never leave the device.

User Growth & Download Statistics

App
By:
LASZLO DOBROVOLSZKI
Rating:
4.90
(12)
3 new ratings
Version:
1.31 Last updated: 2026-08-04
Version code:
889279934
Creation date:
2026-07-16
Compatible devices:
Size:
2.24MB
Price:
4.99
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-08-13
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
LASZLO DOBROVOLSZKI
Apple Apps Store
https://apps.apple.com/us/app/055u4ry/id6789734684
Website:
https://hejluxom.com/ossuary/

User Reviews

It’s dark and noisy af 🔥 🐀🐀🐀🐀🐀
by ze*****, 2026-07-30

Such a fun synth to play! If the presets are too noisy for you, mess with the settings. I like making it sound just musical enough. I love the skull guy so much! I try to leave silence long enough for him to close his mouth (I like making the skull look like he’s talking, don’t judge me!).
by oc*****, 2026-07-29
View all user reviews ›

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