# 76477 Complex Sound Synth vs Seyfert

The clearest difference is review sentiment: Seyfert at 100% against 76477 Complex Sound Synth's 50%. Seyfert also leads on rating (5.0 vs 4.0) and update cadence (every 2 days vs every 3 months). 76477 Complex Sound Synth's advantage is ratings volume (10 vs 2) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

76477 Complex Sound Synth costs $2.99 and Seyfert $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Seyfert holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: 76477 Complex Sound Synth has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of 76477 Complex Sound Synth's written reviews are positive against 100% of Seyfert's.

76477 Complex Sound Synth ships an update every 3 months, Seyfert every 2 days. The most recent releases landed on October 4, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 76477 Complex Sound Synth | Seyfert |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | [4.0 (10 ratings)](https://appshunter.io/ios/app/76477-complex-sound-synth/id837866239/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/seyfert/id6794878287/reviews)** |
| Number of ratings | **10** | 2 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Paid | Paid |
| Size | 4 MB | 3 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) | [Konstantin Torsten Schutz](https://appshunter.io/developer/6778600016) |

## 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


### Seyfert

[App page](https://appshunter.io/ios/app/seyfert/id6794878287)

This music effect plugin creates unique echoes that orbit and revolve around the listener. It offers advanced control over pitch, depth, and tone for each echo, with a built-in reverb and EQ for a rich soundscape. It functions as a standalone app or an Audio Unit for music production software.

**Highlights:** Orbital echo generation, Spin and Doppler pitch-bend effects, 3D binaural imaging, Octave shimmer and transpose, Per-echo tone and drive, Echo-focused reverb and EQ, Standalone and AUv3 support

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

**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 Seyfert free?

Seyfert costs $1.99, with no in-app purchases.

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

Seyfert is rated higher. 76477 Complex Sound Synth averages 4.0 out of 5 from 10 ratings, while Seyfert averages 5.0 from 2 ratings.

### Do 76477 Complex Sound Synth or Seyfert have ads?

Neither 76477 Complex Sound Synth nor Seyfert shows ads.

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

76477 Complex Sound Synth ships an update every 3 months, and Seyfert every 2 days. Most recently, 76477 Complex Sound Synth was updated on October 4, 2026 and Seyfert on October 17, 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.*