# AUMI vs GSDSP MagicDelay

The clearest difference is price: AUMI at Free against GSDSP MagicDelay's $29.99. AUMI also leads on review sentiment (50% vs 25%) and rating (5.0 vs 4.7). GSDSP MagicDelay's advantage is update cadence (every 5 weeks vs every 6 months) and ratings volume (14 vs 4). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

AUMI is free to download; GSDSP MagicDelay costs $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AUMI holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 4 and 14 respectively. Written reviews point the same way: 50% of AUMI's written reviews are positive against 25% of GSDSP MagicDelay's.

AUMI ships an update every 6 months, GSDSP MagicDelay every 5 weeks. The most recent releases landed on June 6, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | AUMI | GSDSP MagicDelay |
| --- | --- | --- |
| Price | **Free** | $29.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/aumi/id647002265/reviews)** | [4.7 (14 ratings)](https://appshunter.io/ios/app/gsdsp-magicdelay/id1642323015/reviews) |
| Number of ratings | 4 | **14** |
| Positive reviews | **50.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | **Free** | Paid |
| Size | 69 MB | 72 MB |
| Requires iOS | 12.4 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rensselaer Polytechnic Institute](https://appshunter.io/developer/545728224) | [Gustav Scholda](https://appshunter.io/developer/1642323227) |

## What reviewers say

### AUMI

[App page](https://appshunter.io/ios/app/aumi/id647002265)

This app allows individuals with limited mobility to create music through movement and gestures. It focuses on improvisation and self-expression, making music accessible to a wider range of people, including those with profound physical disabilities.

**Highlights:** Music creation through movement and gestures, Focus on improvisation and self-expression, Accessible for individuals with profound physical disabilities, Uses device cameras for input, Configurable sound sensitivity, MIDI controller functionality, Import audio from other apps

**Features:** macOS Compatibility

**In-app purchases:** none


### GSDSP MagicDelay

[App page](https://appshunter.io/ios/app/gsdsp-magicdelay/id1642323015)

This app offers a unique spectral delay effect with advanced control over thousands of parallel delays using a single curve. It allows for real-time modulation, tempo-syncing, and precise feedback management for expansive sonic exploration.

**Highlights:** Spectral delay with single curve control, Tempo-synced grids and free-flowing motion, Real-time curve modulation and morphing, dB/s feedback decay system, Built-in highpass and lowpass filters, Crossfeed for stereo image expansion, Feedback Over for values beyond 100%

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is AUMI free?

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

### Is GSDSP MagicDelay free?

GSDSP MagicDelay costs $29.99, with no in-app purchases.

### Which has better reviews, AUMI or GSDSP MagicDelay?

AUMI is rated higher. AUMI averages 5.0 out of 5 from 4 ratings, while GSDSP MagicDelay averages 4.7 from 14 ratings.

### Do AUMI or GSDSP MagicDelay have ads?

Neither AUMI nor GSDSP MagicDelay shows ads.

### Which is updated more often, AUMI or GSDSP MagicDelay?

AUMI ships an update every 6 months, and GSDSP MagicDelay every 5 weeks. Most recently, AUMI was updated on June 6, 2026 and GSDSP MagicDelay on September 22, 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.*