Comparison

SKIIID vs bitcrust

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SKIIID

This app is a percussion synthesizer designed for live performance. It features four morphing pads where finger position controls sound parameters and velocity. Explore deep sound design with a step sequencer, auto-mutation, and chaos engine for instant sound generation.

Highlights
  • Four morphing percussion pads
  • Real-time parameter control via touch
  • 16-step sequencer per pad
  • Auto-mutate sound evolution
  • Chaos engine for instant sound generation
  • AUv3 plugin support
  • MIDI input and Ableton Link sync
Features
Read full description

SKIIID is a percussion synthesizer built for real-time performance. Four pads. Each one is a sound sculpted by where your finger lands. Move left or right to morph between synth parameters. Move up or down to control velocity. Simple to play, deep to explore. — PADS — Four independent drum voices. Each pad morphs between parameter extremes based on X-axis position. Velocity is Y-axis. — STEP SEQUENCER — 16-step sequencer per pad. Variable step length for polyrhythms. Reverse playback, shuffle, pin and random step modes. Sync to Ableton Link or run free. — AUTO-MUTATE — Evolves your sound automatically. Individual interval and intensity per pad, synced to tempo. — CHAOS ENGINE — RANDOM, CHAOS, and MUTATE modes generate new sounds instantly. — AUv3 PLUGIN — Run SKIIID inside AUM, ApeMatrix, Audiobus, or any AUv3 host. Multiple instances work independently — different patches, different sequencers, no shared state. — MIDI — MIDI In for pad triggering. MIDI Learn for external controller mapping. Ableton Link for tempo sync. — WORKS ON — iPhone and iPad, all modern screen sizes. Landscape mode.

About

bitcrust

This application offers a polyphonic synthesizer with a SID-style voice architecture, featuring multiple oscillators, ring modulation, and hard sync. It provides extensive modulation capabilities and a post-synthesis effects rack, extending its sonic range beyond traditional chip synths.

Highlights
  • 12-voice polyphony
  • 3 oscillators per voice with SID-style behavior
  • Extensive modulation matrix
  • 6-slot post-SID FX rack
  • 16-step sequencer and arpeggiator
  • AUv3 and Standalone support
Features
Read full description

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. It's 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 it sits between a chip synth and a modern subtractive. The voice core still does gritty arp basses, zap leads and 8-bit percussion, but the architecture around it (three LFOs, a per-voice mod 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) pushes it into pad, keys and texture territory. WHAT THIS PURCHASE INCLUDES Universal Purchase: one price buys the Mac app plus the iPad version (Standalone and AUv3). On the Mac, the App Store build is the Standalone app only. No AU, no VST3: the Mac App Store doesn't distribute plugin formats. AU and VST3 versions are available separately; details at anode-labs.com/bitcrust. The iPad build is a co-equal target, not a downscale. The full 179-preset factory library, all 14 themes, and the complete mod matrix and 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; 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: 179 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, universal binary (Apple Silicon + Intel), macOS 12 (Monterey) or later. iPad: AUv3 extension plus a Standalone for headphone jamming. In-DAW use on iPad needs an AUv3 host (GarageBand, Logic Pro for iPad, AUM, Cubasis and so on). Support: https://anode-labs.com/bitcrust · support@anode-labs.com Privacy policy: https://anode-labs.com/privacy

Screenshots

SKIIID2 screens

Verdict

The call

The clearest difference is price: bitcrust at $1.99 against SKIIID's $3.99. SKIIID's advantage is ratings volume (31 vs 7). On rating, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

SKIIID costs $3.99 and bitcrust $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for SKIIID against 4.4 for bitcrust. Both are backed by a comparable volume of ratings — 31 and 7 respectively.

UpkeepUpdate frequency

SKIIID ships an update every 4 days, bitcrust every 3 days. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 8 level
SKIIID versus bitcrust: the parameters behind the verdict, then further details
ParameterSKIIIDbitcrust
Price$3.99$1.99 — better
Rating4.4 (31 ratings)4.4 (7 ratings)
Positive reviews73.9% of reviews—
Number of ratings31 — better7
Update frequencyEvery 4 daysEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPad, Mac
Requires iOS16.0 — better17.0
Further details — not scored
Size20 MB16 MB
Age rating4+4+
DeveloperStephan BolchMichele Caserta

Customer experience

SKIIID

All ratings31 ratings
Positive83.9%
Neutral6.5%
Negative9.7%
Written reviews23 reviews
Positive73.9%
Neutral13.0%
Negative13.0%

bitcrust

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%

In-app purchases

None

SKIIID

No in-app purchases

None

bitcrust

No in-app purchases

Questions

Is SKIIID free?
SKIIID costs $3.99, with no in-app purchases.
Is bitcrust free?
bitcrust costs $1.99, with no in-app purchases.
Which has better reviews, SKIIID or bitcrust?
SKIIID and bitcrust are both rated 4.4 out of 5 on the App Store, from 31 and 7 ratings respectively.
Do SKIIID or bitcrust have ads?
Neither SKIIID nor bitcrust shows ads.
Which is updated more often, SKIIID or bitcrust?
SKIIID ships an update every 4 days, and bitcrust every 3 days. Most recently, SKIIID was updated on September 30, 2026 and bitcrust on October 1, 2026.

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