GlitchShredder vs Undae
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GlitchShredder
This app creates glitch and stutter audio effects for music production. It captures, repeats, reverses, and recombines audio fragments in real-time, offering extensive control over rhythmic subdivisions and chaotic textures. It functions as a standalone app or an AUv3 plugin for compatible hosts.
- Independent stereo chopper with 16 segment slots per channel
- Adjustable chaos and glitch probability
- Stutter sync to host tempo with rhythmic subdivisions
- Bit crusher and sample rate reduction
- Real-time oscilloscope visualization
- MIDI control for freezing and slot jumping
- Preset management system
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GlitchShredder is a glitch and stutter effect for iPhone and iPad, available as a standalone app and as an AUv3 plugin for GarageBand, AUM, Cubasis, Logic Pro for iPad and other compatible hosts. At its core is the Chopper: it captures fragments of the incoming audio, repeats, reverses and recombines them in real time, turning any source — vocals, drums, synths, guitar — into unpredictable glitch textures or tightly synced stutter rhythms. KEY FEATURES • Independent stereo chopper: L/R channels with 16 segment slots each, for natural glitch divergence and organic stereo width. • Chaos and Glitch Probability: from predictable behavior to total chaos, with spontaneous segment jumps adjustable in probability and rate. • Reverse Probability and ZC Reverse: random segment reversal, or ping-pong mode that flips direction at the end of every segment. • Stutter Sync: automatic sync to the host tempo (AudioPlayHead) with manual BPM fallback and built-in Tap Tempo. 9 rhythmic subdivisions, from 1/4 to 1/64 plus triplets and dotted values. • Quantized Jumps: locks spontaneous glitch jumps to the beat grid for chaos that stays in time. • Transient Snap: detects transients in the input signal and forces a new segment on every hit, with adjustable sensitivity threshold. • Segment Leveler: per-segment RMS normalization to smooth out level jumps between loud and quiet fragments. • Bit Crusher and Sample Rate Reduction: post-chopper digital degradation for lo-fi textures, from subtle to destroyed. • Drive: output soft clipper with a tanh curve, for progressive, controlled saturation without hard clipping. • Equal-power Dry/Wet and independent Input Gain control. • Single Win mode: a single capture slot for a continuous loop, freeze/looper style. • MIDI: any Note On triggers freeze; notes C3–D#4 jump directly to slots 1–16. • Real-time visualization: oscilloscope with dry/wet overlay colored by active slot, plus a 2×16 segment grid with waveform preview. PRESETS AND INTERFACE GlitchShredder ships with a ready-to-use factory preset library, managed through the 34AudioLibrary system (.a34 format): folder organization, quick search, and the ability to save your own settings. Presets are compatible with the desktop version of the plugin. The touch-first interface offers knobs with vertical drag for coarse adjustment, horizontal drag for fine adjustment, double-tap to reset to default, and long-press for manual value entry. The panel supports pinch-to-zoom up to 2.5x, while the preset bar and controls stay accessible at all times. A live help pop-up on the knob or a bottom info bar (your choice) shows the description of each parameter. WHO IT'S FOR GlitchShredder is built for producers, DJs, sound designers and musicians who want to add glitch, stutter, granular or lo-fi elements to their productions directly from iPhone or iPad — in the studio or on the go, standalone or integrated into your favorite AUv3 setup. No account required, no connection needed to use the plugin.
Undae
This app recreates the sound of vintage optical vibrato and chorus effects for iOS and Mac. It offers customizable filter sweeps, speed control, and stereo spreading for unique audio textures. It can be used as a standalone effect or as an AUv3 plugin in music production apps.
- Optical vibe and vibrato emulation
- Customizable filter stagger
- Chorus and vibrato modes
- Adjustable lamp shape and sweep center
- Tempo sync and stereo spreading
- AUv3 plugin support
- Standalone operation with audio import
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Undae is an optical vibe, the watery and vocal swirl of the late sixties photocell units, rebuilt for iPhone, iPad and Mac. A single slow lamp sweeps a chain of staggered filters, so the notches roll through your tone unevenly instead of moving in a straight line. That stagger is what makes a vibe sound like a vibe and not a phaser. Chorus mode blends the sweep against your dry signal for the classic swirl. Vibrato mode drops the dry signal for a pure, seasick pitch wobble. Voice it to taste. Choose 2, 4, 6 or 8 stages, morph the lamp from a smooth sine to a lopsided ramp, move the sweep centre darker or brighter, and add a touch of feedback for a throatier, more vocal sweep. Set the speed by hand or lock the lamp to your project tempo. Spread it across the stereo field for a rotary style swirl, tilt the tone, then set mix and level. Twelve factory presets get you going, from Classic Chorus and Rotary Wide to Jet Phaser and Seasick, and you can save your own. Use it as an AUv3 audio effect in GarageBand, AUM, Loopy Pro, Cubasis, Logic and other hosts, with host presets, parameter automation and full session state. Or run it standalone with the built in demo bed, your microphone, or a song from your library, and export the processed result. Undae collects nothing. No accounts, no tracking, no analytics, no ads. All audio is processed on your device and is never recorded or uploaded.
Screenshots
Verdict
The clearest difference is price: Undae at $1.99 against GlitchShredder's $4.99. GlitchShredder's advantage is ratings volume (3 vs 1) and iOS requirement (15.0 vs 17.0). On rating, ads, in-app purchases and monetization model 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
GlitchShredder costs $4.99 and Undae $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for GlitchShredder against 5.0 for Undae. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
| Parameter | GlitchShredder | Undae |
|---|---|---|
| Price | $4.99 | $1.99 — better |
| Rating | 5.0 (3 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Daily | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 11 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Diego Capoccitti | Konstantin Torsten Schutz |
In-app purchases
GlitchShredder
No in-app purchases
Undae
No in-app purchases









