# Mantis vs The Voltour Valve Enhancer

The clearest difference is price: The Voltour Valve Enhancer at $8.99 against Mantis's $14.99. Mantis's advantage is update cadence (every 9 months vs every 37 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Mantis costs $14.99 and The Voltour Valve Enhancer $8.99 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 Mantis against 5.0 for The Voltour Valve Enhancer. Both are backed by a comparable volume of ratings — 8 and 8 respectively.

Mantis ships an update every 9 months, The Voltour Valve Enhancer every 37 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Mantis | The Voltour Valve Enhancer |
| --- | --- | --- |
| Price | $14.99 | **$8.99** |
| Rating | [5.0 (8 ratings)](https://appshunter.io/ios/app/mantis-bbd-echo/id1673531514/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/the-voltour-valve-enhancer/id6462812585/reviews) |
| Number of ratings | 8 | 8 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 37 months |
| Monetization | Paid | Paid |
| Size | 10 MB | 23 MB |
| Requires iOS | **14.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) | [Nembrini Audio](https://appshunter.io/developer/1493296895) |

## What reviewers say

### Mantis

[App page](https://appshunter.io/ios/app/mantis-bbd-echo/id1673531514)

This audio plugin emulates a vintage 70s analog delay/echo unit, offering a warm, authentic sound. It features four echo taps, swell selectors, and a unique modulation section for chorus-like effects.

**Highlights:** Emulates rare 70s BBD delay/echo, Warm analog sound, Four echo taps, Four swell selectors, Rotafaze modulation section, Mimics tape echo wow/flutter, Chorus-delay effect

**Features:** Vision Pro support

**In-app purchases:** none


### The Voltour Valve Enhancer

[App page](https://appshunter.io/ios/app/the-voltour-valve-enhancer/id6462812585)

This audio plugin emulates a renowned hardware unit, offering three distinct valve modes for warming up sounds, adding aggression with odd harmonics, or creating unique tonal textures. It expands on the original hardware with features like parallel processing, continuous filtering, and phase blending.

**Highlights:** Three valve bias modes (Triode, Pentode 1, Pentode 2), Mix parameter for parallel processing, Continuous filter control, Phase parameter for dry/wet blending, Auto wet output leveling, Stereo imaging link parameter

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mantis free?

Mantis costs $14.99, with no in-app purchases.

### Is The Voltour Valve Enhancer free?

The Voltour Valve Enhancer costs $8.99, with no in-app purchases.

### Which has better reviews, Mantis or The Voltour Valve Enhancer?

Mantis and The Voltour Valve Enhancer are both rated 5.0 out of 5 on the App Store, from 8 and 8 ratings respectively.

### Do Mantis or The Voltour Valve Enhancer have ads?

Neither Mantis nor The Voltour Valve Enhancer shows ads.

### Which is updated more often, Mantis or The Voltour Valve Enhancer?

Mantis ships an update every 9 months, and The Voltour Valve Enhancer every 37 months. Most recently, Mantis was updated on November 3, 2026 and The Voltour Valve Enhancer on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*