# Seyfert vs MNTRP

The clearest difference is update cadence: Seyfert at every 2 days against MNTRP's every 2 weeks. Seyfert also leads on price ($1.99 vs $6.99) and iOS requirement (15.0 vs 18.0). On rating, review sentiment, ratings volume and ads there is nothing between them.

Seyfert costs $1.99 and MNTRP $6.99 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 Seyfert against 5.0 for MNTRP. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Seyfert ships an update every 2 days, MNTRP every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Seyfert | MNTRP |
| --- | --- | --- |
| Price | **$1.99** | $6.99 |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/seyfert/id6794878287/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/mntrp/id6800424988/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | Paid | Paid |
| Size | 3 MB | 3 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Konstantin Torsten Schutz](https://appshunter.io/developer/6778600016) | [LASZLO DOBROVOLSZKI](https://appshunter.io/developer/6779159106) |

## 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


### MNTRP

[App page](https://appshunter.io/ios/app/mntrp/id6800424988)

Explore a unique soundscape by controlling a spaceship's journey through space. Its position on a figure-8 trajectory dictates the ambient drone sound, with distinct synthesis engines for each stage of the voyage. Automate sound parameters and experience immersive 3D visuals.

**Highlights:** Spatial sound control via spaceship trajectory, Five distinct synthesis stages, Continuous sound morphing, Manual and automated flight modes, Interactive 3D cockpit view, AUv3 instrument and effect support, MIDI hardware integration

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

**In-app purchases:** none


## Frequently asked questions

### Is Seyfert free?

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

### Is MNTRP free?

MNTRP costs $6.99, with no in-app purchases.

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

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

### Do Seyfert or MNTRP have ads?

Neither Seyfert nor MNTRP shows ads.

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

Seyfert ships an update every 2 days, and MNTRP every 2 weeks. Most recently, Seyfert was updated on October 24, 2026 and MNTRP on October 24, 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.*