# Mass vs GlitchStep

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.

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.

## The numbers

| Metric | Mass | GlitchStep |
| --- | --- | --- |
| Price | $9.99 | $9.99 |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/mass-midi-generator/id6498471263/reviews)** | [4.9 (19 ratings)](https://appshunter.io/ios/app/glitchstep/id6708239273/reviews) |
| Number of ratings | 11 | **19** |
| Positive reviews | **100.0% of reviews** | 88.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | Paid | Paid |
| Size | 10 MB | 6 MB |
| Requires iOS | **17.0** | 17.2 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Usable Creations](https://appshunter.io/developer/1718600235) | [Alex Matheu](https://appshunter.io/developer/407790501) |

## What reviewers say

### Mass

[App page](https://appshunter.io/ios/app/mass-midi-generator/id6498471263)

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.

**Highlights:** Generative Sequences, Living Modulations, Euclidean Pattern Sequencing, Flexible MIDI CC, Physics-Based Animation, Standalone & AUv3 Plugin, MIDI Sync, iCloud Sync

**Features:** Vision Pro support

**In-app purchases:** none


### GlitchStep

[App page](https://appshunter.io/ios/app/glitchstep/id6708239273)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mass free?

Mass costs $9.99, with no in-app purchases.

### Is GlitchStep free?

GlitchStep costs $9.99, with no in-app purchases.

### Which has better reviews, Mass or GlitchStep?

Mass is rated higher. Mass averages 5.0 out of 5 from 11 ratings, while GlitchStep averages 4.9 from 19 ratings.

### Do Mass or GlitchStep have ads?

Neither Mass nor GlitchStep shows ads.

### Which is updated more often, Mass or GlitchStep?

Mass ships an update every 4 months, and GlitchStep every 3 days. Most recently, Mass was updated on September 30, 2026 and GlitchStep on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*