Comparison

SimplyFlange vs GSDSP MMMm

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

Head to head
About

SimplyFlange

This audio effect app provides a straightforward flange effect for a retro sound. It functions as an AUv3 app extension, compatible with hosts like AUM, Cubasis, and GarageBand.

Highlights
  • Retro flange audio effect
  • AUv3 app extension
  • Compatible with AUM, Cubasis, GarageBand
  • Standalone app functionality
  • Simple and straightforward interface
Features
Read full description

A simple but straightforward flange audio effect to give you that nice retro feel. The filter exists in an AUv3 app extension so it is available for use in any host app that supports AudioUnit components such as AUM or Cubasis or GarageBand.

About

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.

Highlights
  • 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
Features
Read full description

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

SimplyFlange2 screens
GSDSP MMMm4 screens

Verdict

The call

The clearest difference is price: GSDSP MMMm at Free against SimplyFlange's $0.99. GSDSP MMMm also leads on ratings volume (14 vs 1) and iOS requirement (12.0 vs 16.6). SimplyFlange's advantage is update cadence (every 9 days vs every 6 weeks). On rating, review sentiment, ads and in-app purchases 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

GSDSP MMMm is free to download; SimplyFlange costs $0.99 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 SimplyFlange against 4.9 for GSDSP MMMm. That said, the two scores are not equally well evidenced: GSDSP MMMm has 14 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

SimplyFlange ships an update every 9 days, GSDSP MMMm every 6 weeks. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.

Scorecard5 real differences · 5 level
SimplyFlange versus GSDSP MMMm: the parameters behind the verdict, then further details
ParameterSimplyFlangeGSDSP MMMm
Price$0.99Free — better
Rating5.0 (1 ratings) — better4.9 (14 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings114 — better
Update frequencyEvery 9 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.612.0 — better
Further details — not scored
Size5 MB44 MB
Age rating4+4+
DeveloperBrad HowesGustav Scholda

Customer experience

SimplyFlange

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

GSDSP MMMm

All ratings13 ratings
Positive92.3%
Neutral7.7%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SimplyFlange

No in-app purchases

None

GSDSP MMMm

No in-app purchases

Questions

Is SimplyFlange free?
SimplyFlange costs $0.99, with no in-app purchases.
Is GSDSP MMMm free?
GSDSP MMMm is free to download, with no in-app purchases.
Which has better reviews, SimplyFlange or GSDSP MMMm?
SimplyFlange is rated higher. SimplyFlange averages 5.0 out of 5 from 1 ratings, while GSDSP MMMm averages 4.9 from 14 ratings.
Do SimplyFlange or GSDSP MMMm have ads?
Neither SimplyFlange nor GSDSP MMMm shows ads.
Which is updated more often, SimplyFlange or GSDSP MMMm?
SimplyFlange ships an update every 9 days, and GSDSP MMMm every 6 weeks. Most recently, SimplyFlange was updated on September 17, 2026 and GSDSP MMMm on September 11, 2026.

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