# Tonic FX vs Seyfert

The clearest difference is price: Seyfert at $1.99 against Tonic FX's $9.99. Seyfert also leads on update cadence (every 2 days vs weekly) and iOS requirement (15.0 vs 17.0). On rating, review sentiment, ratings volume and ads there is nothing between them.

Tonic FX costs $9.99 and Seyfert $1.99 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 Tonic FX against 5.0 for Seyfert. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Tonic FX ships an update weekly, Seyfert every 2 days. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Tonic FX | Seyfert |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/tonic-fx-multi-effects/id6792166457/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/seyfert/id6794878287/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Paid | Paid |
| Size | 9 MB | 3 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rubens Felicio](https://appshunter.io/developer/6775565794) | [Konstantin Torsten Schutz](https://appshunter.io/developer/6778600016) |

## What reviewers say

### Tonic FX

[App page](https://appshunter.io/ios/app/tonic-fx-multi-effects/id6792166457)

Create custom audio effect chains for your music. This app allows you to build and reorder a variety of effects, from distortion and modulation to time-based and dynamic processors, for use in standalone mode or with compatible music production hosts.

**Highlights:** Customizable effect rack, Reorderable effect chain, 24 built-in effects, Standalone app and AUv3 plugin, MIDI Learn for hardware control, Tempo sync for time-based effects, Preset library

**Features:** 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 Tonic FX free?

Tonic FX costs $9.99, with no in-app purchases.

### Is Seyfert free?

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

### Which has better reviews, Tonic FX or Seyfert?

Tonic FX and Seyfert are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do Tonic FX or Seyfert have ads?

Neither Tonic FX nor Seyfert shows ads.

### Which is updated more often, Tonic FX or Seyfert?

Tonic FX ships an update weekly, and Seyfert every 2 days. Most recently, Tonic FX was updated on October 10, 2026 and Seyfert on October 1, 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.*