# TB GonioMeter vs GSDSP MMMm

The clearest difference is rating: GSDSP MMMm at 4.9 against TB GonioMeter's 4.6. On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GSDSP MMMm holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 23 and 16 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

TB GonioMeter ships an update every 2 months, GSDSP MMMm every 5 weeks. The most recent releases landed on October 1, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | TB GonioMeter | GSDSP MMMm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (23 ratings)](https://appshunter.io/ios/app/tb-goniometer/id6444903624/reviews) | **[4.9 (16 ratings)](https://appshunter.io/ios/app/gsdsp-mmmm/id6450306205/reviews)** |
| Number of ratings | **23** | 16 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 11 MB | 44 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ToneBoosters](https://appshunter.io/developer/1472446500) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### TB GonioMeter

[App page](https://appshunter.io/ios/app/tb-goniometer/id6444903624)

Analyze stereo image imbalances and frequency correlations in real-time. Ensure your audio content is high quality and compatible with mono down-mixes, crucial for mobile entertainment. This tool offers detailed waveform inspection and balance spectrum analysis.

**Highlights:** Real-time goniometer for stereo image waveforms, Real-time correlation meter and spectrum, Real-time stereo balance and spectrum meter, Color themes for UI, Mono down-mix compatibility check, Optimized for iPad, compatible with iPhone/iPod Touch

**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, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TB GonioMeter free?

TB GonioMeter is free to download, with no in-app purchases.

### Is GSDSP MMMm free?

GSDSP MMMm is free to download, with no in-app purchases.

### Which has better reviews, TB GonioMeter or GSDSP MMMm?

GSDSP MMMm is rated higher. TB GonioMeter averages 4.6 out of 5 from 23 ratings, while GSDSP MMMm averages 4.9 from 16 ratings.

### Do TB GonioMeter or GSDSP MMMm have ads?

Neither TB GonioMeter nor GSDSP MMMm shows ads.

### Which is updated more often, TB GonioMeter or GSDSP MMMm?

TB GonioMeter ships an update every 2 months, and GSDSP MMMm every 5 weeks. Most recently, TB GonioMeter was updated on October 1, 2026 and GSDSP MMMm on October 20, 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.*