Comparison

Sentium Glitch vs SL Tune

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

Head to head
About

Sentium Glitch

Create complex, animated electronic instruments using four distinct synthesis engines. Blend subtractive, FM, Karplus-Strong, and wavetable layers with extensive modulation options. Save and recall patches with iCloud sync for a comprehensive sound design experience.

Highlights
  • Four distinct synthesis engines
  • Layered sound design
  • Extensive modulation routing
  • XY pad recording
  • AUv3 and standalone app
  • Factory and user presets
  • iCloud sync for presets
Currently charting
Read full description

Build animated electronic instruments from four synthesis engines. Blend Subtractive, FM, Karplus-Strong, and Wavetable layers. Sentium Glitch is a stereo AUv3 synthesizer for producers, composers, and sound designers who want layered motion inside one focused instrument. Use it in compatible AUv3 instrument hosts, or open the standalone app on iPhone, iPad, Mac, and Apple Vision Pro to load the same experience, connect MIDI inputs, and play it as a standalone instrument. Every patch is a complete sound design document: four engine layers, per-layer envelopes, filters, LFOs, modulation routes, pan, level, engine bypass, master effects, polyphony budgeting, voice mode and glide, and optional recorded XY Pad motion all recallable through presets and AU host project state. Core sound engines: - Subtractive: dual oscillators, sub, noise, detune, pulse-width shaping, and multimode filtering for classic analog weight and layered fundamentals. - FM: five operator topologies for bells, keys, metallic basses, and aggressive digital color: two-operator, blended two-operator, stacked, dual-modulator, and split-carrier. - Karplus-Strong: plucked and struck delay-line resonators for guitars, kotos, mallets, metallic attacks, and hybrid acoustic-electric textures. - Wavetable: curated morphing tables with vocal formants, digital edges, harmonic motion, seeded-random spectra, and unison width for animated modern tones. Performance and modulation: - Poly, mono, and legato voice modes with adjustable glide (portamento) for tight monophonic basses and expressive, gliding leads. - Two XY pads with four routable axes. - Record XY pad motion per engine and save it with the patch. - Route LFOs, envelopes, velocity, aftertouch, pitch bend, mod wheel, CC74, and XY pad axes to musical targets. - Move oscillator pitch and mix, FM index and ratios, Karplus brightness and decay, wavetable position and detune, filter, pan, gain, LFO rates, and master-FX controls. - Sync LFOs, chorus rate, and delay time to host tempo when available. Patch and mix tools: - Four-layer engine mixer for balancing, panning, and bypassing each sound source. - Master chorus, delay, reverb, level, and soft clip. - Global polyphony budget up to 32 voices with device-aware runtime limits. - Stereo output at 44.1, 48, and 96 kHz sample rates where supported. - On-screen keyboard with pitch and modulation wheels, plus CoreMIDI input management in the standalone app. Factory and user library: Start from 92 factory presets spanning signature motion patches, classic synth tones, basses, leads, keys, bells, plucks, strings, pads, rhythmic textures, atmospheres, experimental sounds, and technical references. Save your own user presets locally with iCloud sync when available. Export selected saved user presets as .sgpresets files and import them through a preview workflow that appends new user presets without overwriting the existing library. Sentium Glitch is built for sounds that move: evolving pads, unstable digital bells, hybrid plucks, animated basses, cinematic sweeps, mono leads that glide between notes, and expressive performance patches that respond to your hands.

About

SL Tune

This app offers vocal pitch correction and tone effects for music production on iPhone and iPad. It allows precise control over vocal tuning, tone shaping, and echo, with various modes and presets for different vocal styles. The interface is adaptable for different screen orientations and host applications.

Highlights
  • Vocal pitch correction
  • Tone shaping effects
  • Adjustable echo
  • Key and scale selection
  • Natural and hard correction modes
  • Customizable presets
  • Resizable interface
Features
Read full description

SL Tune is a vocal pitch-correction and tone effect for iPhone and iPad. Insert it on a vocal track in a compatible AUv3 host. Choose a key and scale, or select the allowed notes yourself. Natural mode preserves small pitch movements, Hard gives faster correction, and Robot locks pitch to the selected root across octaves. Six controls shape the sound: Retune, Humanize, Formant, Snap, Echo and Mix. Formant changes the tonal balance. Mix blends processed and original audio. Start with one of six factory presets: Classic Hard, Trap Lock, Silk Vocal, Clean Fix, Robot Grid and Echo Adlib. Save and load your own presets locally. The resizable interface adapts to portrait, landscape and compact host windows. Use SL Tune as an AUv3 effect in a compatible music host, or open the standalone app to preview and adjust the controls. Pitch correction works best on a single vocal line. It is not designed to tune a complete mix or separate voices from background music.

Screenshots

Sentium Glitch4 screens
SL Tune3 screens

Verdict

The call

The clearest difference is price: SL Tune at $7.99 against Sentium Glitch's $29.99. SL Tune also leads on iOS requirement (15.0 vs 17.0). Sentium Glitch's advantage is chart position (#200 vs unranked) and ratings volume (4 vs 1). On rating, review sentiment, update cadence and ads 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

Sentium Glitch costs $29.99 and SL Tune $7.99 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 — 5.0 for Sentium Glitch against 5.0 for SL Tune. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Sentium Glitch ships an update every 2 weeks, SL Tune every 11 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

Scorecard4 real differences · 7 level
Sentium Glitch versus SL Tune: the parameters behind the verdict, then further details
ParameterSentium GlitchSL Tune
Price$29.99$7.99 — better
Rating5.0 (4 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings4 — better1
Update frequencyEvery 2 weeksEvery 11 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#200 — better—
DevicesiPhone, iPad, Mac, Vision Pro — betteriPhone, iPad, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size14 MB38 MB
Age rating4+4+
DeveloperChristian ThompsonVIACHESLAV ZHILTSOV

Customer experience

Sentium Glitch

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SL Tune

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sentium Glitch

No in-app purchases

None

SL Tune

No in-app purchases

Questions

Is Sentium Glitch free?
Sentium Glitch costs $29.99, with no in-app purchases.
Is SL Tune free?
SL Tune costs $7.99, with no in-app purchases.
Which has better reviews, Sentium Glitch or SL Tune?
Sentium Glitch and SL Tune are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.
Do Sentium Glitch or SL Tune have ads?
Neither Sentium Glitch nor SL Tune shows ads.
Which is updated more often, Sentium Glitch or SL Tune?
Sentium Glitch ships an update every 2 weeks, and SL Tune every 11 days. Most recently, Sentium Glitch was updated on November 5, 2026 and SL Tune on November 10, 2026.

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