# 76477 Complex Sound Synth vs Hearing Space

The clearest difference is price: Hearing Space at Free against 76477 Complex Sound Synth's $2.99. Hearing Space also leads on rating (5.0 vs 3.9) and update cadence (every 4 days vs every 3 months). 76477 Complex Sound Synth's advantage is ratings volume (9 vs 3) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Hearing Space is free to download; 76477 Complex Sound Synth costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hearing Space holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 9 and 3 respectively.

76477 Complex Sound Synth ships an update every 3 months, Hearing Space every 4 days. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 76477 Complex Sound Synth | Hearing Space |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.9 (9 ratings)](https://appshunter.io/ios/app/76477-complex-sound-synth/id837866239/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/hearing-space-time/id6758031265/reviews)** |
| Number of ratings | **9** | 3 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Paid | **Free** |
| Size | 4 MB | 261 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [Jing Dong](https://appshunter.io/developer/1563297410) |

## What reviewers say

### 76477 Complex Sound Synth

[App page](https://appshunter.io/ios/app/76477-complex-sound-synth/id837866239)

Create complex sound effects and music with a powerful synthesizer inspired by vintage hardware. Offers extensive modulation, noise generation, and customizable envelopes. Easily share your creations and control it with MIDI devices.

**Highlights:** Three oscillators with multiple wave types, Modulation capabilities for oscillators, Adjustable noise generator with filter, Configurable ADSR envelope, Unlimited sound effect generator boards, MIDI input support, Export/import sound effect boards

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Hearing Space

[App page](https://appshunter.io/ios/app/hearing-space-time/id6758031265)

This experimental art application uses AI and machine vision to analyze images, inferring spatial depth and structure. It then transforms these spatial relationships into interactive soundscapes, allowing users to explore a non-human model of space through touch. The app treats your device as a perceptual instrument to reveal AI's internal logic.

**Highlights:** AI-based image analysis, Machine vision for spatial inference, Interactive sound generation, Touch-based sonic exploration, Perceptual instrument interface, Artistic and exploratory experience

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 76477 Complex Sound Synth free?

76477 Complex Sound Synth costs $2.99, with no in-app purchases.

### Is Hearing Space free?

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

### Which has better reviews, 76477 Complex Sound Synth or Hearing Space?

Hearing Space is rated higher. 76477 Complex Sound Synth averages 3.9 out of 5 from 9 ratings, while Hearing Space averages 5.0 from 3 ratings.

### Do 76477 Complex Sound Synth or Hearing Space have ads?

Neither 76477 Complex Sound Synth nor Hearing Space shows ads.

### Which is updated more often, 76477 Complex Sound Synth or Hearing Space?

76477 Complex Sound Synth ships an update every 3 months, and Hearing Space every 4 days. Most recently, 76477 Complex Sound Synth was updated on November 1, 2026 and Hearing Space on November 5, 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.*