Mass vs GlitchStep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mass
This app is a physics-based MIDI generator that allows musicians to create complex generative sequences, organic modulations, and explore boundless musical experimentation. It offers a powerful toolkit for creative control and can be used as a standalone application or an AUv3 plugin.
- Generative Sequences
- Living Modulations
- Euclidean Pattern Sequencing
- Flexible MIDI CC
- Physics-Based Animation
- Standalone & AUv3 Plugin
- MIDI Sync
- iCloud Sync
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Open the door to new musical dimensions with Mass — a physics-based MIDI generator crafted to inspire musicians across genres. Add complexity to your sequences, explore generative patterns, or create organic modulations; Mass is your gateway to boundless musical experimentation. • Generative Sequences: Sculpt intricate melodies and rhythms that evolve over time. • Living Modulations: Shape fluid, natural modulations that respond like living elements. • Total Creative Freedom: Need a spark of randomness or complete control? Mass lets you move seamlessly between guided automation and full improvisation. Whether you’re diving into ambient soundscapes, exploring the depths of MIDI control, or crafting intricate modulations, Mass is your key to immersive sonic worlds. Available as a standalone MIDI generator and AUv3 plugin, Mass transforms your favorite hardware and software instruments into a sandbox of endless possibilities. With Mass, you’ll find an extensive toolkit for creative control and experimentation. Here’s what you can expect: • Euclidean Pattern Sequencing: Easily create complex sequences by layering polyrhythmic Euclidian patterns. • Flexible MIDI CC: Modulate and sequence any MIDI CC parameter, allowing you to breathe life into every detail of your sound. • Physics-Based Animation: Apply physics to sequences and modulations, creating dynamic, evolving movements within your music. • Powerful Controller: Mass is a powerful MIDI controller, allowing you to manipulate your favorite hardware and software instruments in either standalone or AUv3 modes. • MIDI Sync: Synchronize with external hardware and software using standard MIDI sync capabilities. Mass can function as the primary clock, or be synced to a host clock. • iCloud Sync: Seamlessly share your creations across devices with iCloud syncing. Work in the standalone version or AUv3 plugin, without missing a beat. With Mass, you’re free to explore musical layers, rhythms, and motion in new ways. Let it guide your creative journey, transforming each idea into a boundless musical experience.
GlitchStep
This music app is a monophonic 16-step MIDI sequencer and AUv3 MIDI processor extension. It allows for real-time sequence rearrangement, song building with playlists, and dynamic performance variations. Integrate it with your favorite AUv3 hosts for enhanced music production.
- 16-step monophonic sequencer
- AUv3 MIDI processor extension
- Real-time sequence rearrangement
- Pattern and slice playlists
- Glitch effects with XY pad
- Extensive scale options
- Customizable sequence controls
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Unleash Your Creativity with GlitchStep GlitchStep is a cutting-edge monophonic 16-step, performance-oriented sequencer and AUv3 MIDI processor extension. Dive into a world of musical possibilities as you play with your sequence and perform dynamic, captivating variations. Next-Level Sequence Manipulation: Inspired by GlitchCore, GlitchStep employs a slice grid for real-time sequence rearrangement. Both patterns and slices can be compiled into playlists, allowing you to build and modify songs on-the-fly for live performance or studio sessions. Effortless Integration: Load GlitchStep as an AUv3 MIDI Processor/MIDI FX in your favorite AUv3 hosts like AUM, Logic, Loopy Pro, Drambo, and more. Note: Standalone use is not supported. Features to Elevate Your Music: - 16 Steps - 8 Patterns - Unlimited Pattern Playlist Entries - Slice Grid with Drawing Mode - 8 Slice Patterns - Unlimited Slice Pattern Playlist Entries - Glitch Your Sequence with XY Pad and Sliders - Aggressive Glitch Capabilities - Extensive Scale Options - Customizable Start and End Sequence Positions - Control Sequence Direction - Global Sequence Rate Adjustments - Individual Pattern Rates - Pattern Note Slides - Swing - Randomize, Shift, Shuffle, Copy/Paste, and Initialize Patterns - Randomization Thresholds - Selective Randomization for Notes, Gates, Velocity, and Probability - Randomize, Shift, Copy/Paste, and Initialize Slices - Scale Key Adjustment - Minimum Octave and Octave Range Settings - 16 Themes Transform your music production with GlitchStep. Whether you're looking to add subtle variations or go all-in on aggressive glitches, this app has you covered.
Screenshots
Verdict
The clearest difference is update cadence: GlitchStep at every 3 days against Mass's every 4 months. Mass's advantage is review sentiment (100% vs 89%). On price, rating, ratings volume 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
Mass costs $9.99 and GlitchStep $9.99 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 Mass against 4.9 for GlitchStep. Both are backed by a comparable volume of ratings — 11 and 19 respectively. Written reviews are what separate them: 100% of Mass's written reviews are positive against 89% of GlitchStep's.
Mass ships an update every 4 months, GlitchStep every 3 days. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.
| Parameter | Mass | GlitchStep |
|---|---|---|
| Price | $9.99 | $9.99 |
| Rating | 5.0 (11 ratings) — better | 4.9 (19 ratings) |
| Positive reviews | 100.0% of reviews — better | 88.9% of reviews |
| Number of ratings | 11 | 19 — better |
| Update frequency | Every 4 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 — better | 17.2 |
| Further details — not scored | ||
| Size | 10 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Usable Creations | Alex Matheu |
Customer experience
Mass
GlitchStep
In-app purchases
Mass
No in-app purchases
GlitchStep
No in-app purchases







