# SimplyFlange vs GSDSP MMMm

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.

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.

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.

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.

## The numbers

| Metric | SimplyFlange | GSDSP MMMm |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simplyflange/id1554960150/reviews)** | [4.9 (14 ratings)](https://appshunter.io/ios/app/gsdsp-mmmm/id6450306205/reviews) |
| Number of ratings | 1 | **14** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 6 weeks |
| Monetization | Paid | **Free** |
| Size | 5 MB | 44 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brad Howes](https://appshunter.io/developer/430573224) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### SimplyFlange

[App page](https://appshunter.io/ios/app/simplyflange/id1554960150)

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:** Vision Pro support

**In-app purchases:** none


### GSDSP MMMm

[App page](https://appshunter.io/ios/app/gsdsp-mmmm/id6450306205)

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:** macOS Compatibility

**In-app purchases:** none


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