# Seyfert vs Contour

The clearest difference is review sentiment: Seyfert at 100% against Contour's 0%. Seyfert also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 1). Contour's advantage is price (Free vs $1.99). On ratings volume, ads, device support and iOS requirement there is nothing between them.

Contour is free to download; Seyfert costs $1.99 up front. Contour sells 1 one-off in-app purchase. Seyfert asks for nothing beyond the download.

Seyfert holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 100% of Seyfert's written reviews are positive against 0% of Contour's.

Seyfert ships an update every 2 days, Contour weekly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Seyfert | Contour |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/seyfert/id6794878287/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/contour-ambient-morph-synth/id6798038727/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Paid | **Freemium** |
| Size | 3 MB | 108 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Konstantin Torsten Schutz](https://appshunter.io/developer/6778600016) | [Chih Han Lin](https://appshunter.io/developer/1800248325) |

## What reviewers say

### 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


### Contour

[App page](https://appshunter.io/ios/app/contour-ambient-morph-synth/id6798038727)

This app is a unique musical instrument played by touch. It uses a visual interface where your finger's position determines the sound, offering a novel way to create drones, textures, and pads. It also functions as an AUv3 plugin for use in other music production apps.

**Highlights:** Touch-based sound generation, Perceptual distance mapping, Eleven distinct sound sheets, MIDI input and ribbon controller, AUv3 plugin support, Recording functionality (Pro), Customizable sound sheets (Pro)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contour Pro | $6.99 | one-time |


## Frequently asked questions

### Is Seyfert free?

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

### Is Contour free?

Contour is free to download, with in-app purchases available.

### Which has better reviews, Seyfert or Contour?

Seyfert is rated higher. Seyfert averages 5.0 out of 5 from 3 ratings, while Contour averages 4.0 from 2 ratings.

### Do Seyfert or Contour have ads?

Neither Seyfert nor Contour shows ads.

### Which is updated more often, Seyfert or Contour?

Seyfert ships an update every 2 days, and Contour weekly. Most recently, Seyfert was updated on October 24, 2026 and Contour on October 14, 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.*