Thesys vs GSDSP MMMm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thesys
This app is a powerful and intuitive MIDI step sequencer for creating complex musical patterns. It offers extensive control over MIDI devices, enabling organic bass lines, leads, and pads for studio or live performance. Advanced features allow for real-time pattern manipulation directly from a MIDI keyboard.
- MIDI Step Sequencer
- Pattern Creation
- Live Performance Options
- Real-time Pattern Manipulation
- Integrated Synth
- Action Section (Gatetime, Looper, Slowdown)
- Ableton Link Support
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Thesys is an extremely powerful and intuitive MIDI Step Sequencer app, giving you control over just about all aspects of your favorite MIDI devices. Use Thesys to create varied and organic bass lines, screaming leads, pulsating chords, and organic pad sounds in the studio or on stage. For live musicians, Thesys provides an extremely versatile palette of performance options which can be triggered right from your MIDI keyboard: you can transpose, manipulate, twist up, mutate, and mangle your patterns without even getting near your iPad. No other MIDI sequencer plugin offers you the ease and power of Thesys. It is 100% MIDI compliant and therefore provides the ultimate MIDI sequencing solution. iPad Edition Features: • Integrated Synth • Action Section (Gatetime, Looper, Slowdown...) • Pattern Sequencer • Standalone & Audio Unit v3 • Ableton Link Support • MIDI file Export • MIDI Support (Virtual, Netzwerk, Extern, Bluetooth), MIDI Learn & Host Automation • MIDI Clock Sync (Master & Slave) • Preset iCloud Sync • Preset Share • Zoom
GSDSP MMMm
This app provides a powerful MIDI modulation engine to control various plugins, hardware, and instruments. It offers a range of modulation sources like LFOs and random generators, and includes a dedicated performance skin for live use. It's a MIDI-only FX version for hosts requiring pure MIDI processing.
- MIDI CC control for plugins and hardware
- LFO, Random, Envelope Follower modulators
- XY pads for modulation
- Dedicated Performance Skin for live use
- AUv3 MIDI FX plugin
- Desktop versions available
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A powerful MIDI modulation engine for controlling plugins, hardware, and instruments using LFOs, random sources, macros, and audio-based modulation. Modulate Everything MMMm is a MIDI controller and modulation workstation designed to control any parameter that accepts MIDI CC — software instruments, plugins, external hardware, or any MIDI-capable device. Create modulation using LFOs, Random Generators, Envelope Followers, XY pads, and more. No more drawing of automation curves, keep your audio dynamic and exciting with ease. Perform Live MMMm includes a dedicated Performance Skin designed for low-light and stage environments. It uses a restrained, red-accented color palette that preserves focus and minimizes visual distraction while performing. The interface remains clear and readable in dark settings, ensuring stable workflow during your live performance. MMM vs MMMm MMM includes audio input, enabling Envelope Followers, audio-reactive modulation, and audio output — ideal when used as an audio plugin. MMMm, by contrast, is a MIDI-only FX version for hosts such as Logic Pro or AUM that require a pure MIDI processor. Both versions support MIDI input and output and provide the same core modulators. MMMm is an AUv3 midi effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more. A Desktop version is also available for Windows and macOS (VST3 / AU / AAX). More information here: https://gs-dsp.com/products
Screenshots
Verdict
Thesys and GSDSP MMMm both sit at 4.7 stars, but that hides the real split: 100% of GSDSP MMMm's written reviews are positive against 59% of Thesys's. GSDSP MMMm also leads on in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 2 months). Thesys's advantage is ratings volume (85 vs 16). On price, rating 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
Both are free to download. Thesys sells 1 one-off in-app purchase. GSDSP MMMm asks for nothing beyond the download.
GSDSP MMMm holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Thesys has 85 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 59% of Thesys's written reviews are positive against 100% of GSDSP MMMm's.
Thesys ships an update every 2 months, GSDSP MMMm every 5 weeks. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | Thesys | GSDSP MMMm |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (85 ratings) | 4.9 (16 ratings) — better |
| Positive reviews | 59.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 85 — better | 16 |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | Sugar Bytes GmbH | Gustav Scholda |
Customer experience
Thesys
GSDSP MMMm
In-app purchases
Thesys
- Thesys Full Version$19.99
GSDSP MMMm
No in-app purchases








