# SWAM Contrabassoon vs PaSSBot

The clearest difference is price: SWAM Contrabassoon at $29.99 against PaSSBot's $34.99. SWAM Contrabassoon also leads on update cadence (every 2 months vs every 4 months) and device support (3 vs 1). PaSSBot's advantage is ratings volume (8 vs 1) and iOS requirement (11.0 vs 15.0). On rating, ads, in-app purchases and monetization model there is nothing between them.

SWAM Contrabassoon costs $29.99 and PaSSBot $34.99 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 SWAM Contrabassoon against 5.0 for PaSSBot. That said, the two scores are not equally well evidenced: PaSSBot has 8 ratings behind it against 1, so its average is the more settled of the two.

SWAM Contrabassoon ships an update every 2 months, PaSSBot every 4 months. The most recent releases landed on October 17, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | SWAM Contrabassoon | PaSSBot |
| --- | --- | --- |
| Price | **$29.99** | $34.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/swam-contrabassoon/id1458125131/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/passbot/id1557720096/reviews) |
| Number of ratings | 1 | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | Paid |
| Size | 130 MB | 11 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Audio Modeling](https://appshunter.io/developer/1326331126) | [SonicPlanet Audio Video Teknolojileri Anonim Sti.](https://appshunter.io/developer/946568989) |

## What reviewers say

### SWAM Contrabassoon

[App page](https://appshunter.io/ios/app/swam-contrabassoon/id1458125131)

This virtual instrument offers unparalleled realism and expressive power for contrabassoon sounds. It generates authentic performances dynamically, responding to subtle playing nuances, and includes a room simulator for immersive acoustic spaces. It's designed for musicians seeking a highly responsive and realistic digital double-reed experience.

**Highlights:** Physical modeling for authentic sound generation, Dynamic response to playing nuances, Room Simulator 'Ambiente' for spatial control, Standalone and AUv3 plugin support, Intuitive interface for all users, MPE and MIDI controller compatibility

**In-app purchases:** none


### PaSSBot

[App page](https://appshunter.io/ios/app/passbot/id1557720096)

This app is a stochastic filter bank audio processor for iPad, offering advanced sound manipulation with various filter types and powerful stochastic generators. It allows for precise control over filter parameters and harmonic distribution, ideal for creating complex audio textures.

**Highlights:** Stochastic filter bank audio processor, Multiple filter types (Biquad, Ladder, SEM, Resonators), Up to 64 filters in stereo, Powerful stochastic generators, Individual filter parameter control, Harmonic distribution options, Precision DSP rendering (<1ms control rate)

**In-app purchases:** none


## Frequently asked questions

### Is SWAM Contrabassoon free?

SWAM Contrabassoon costs $29.99, with no in-app purchases.

### Is PaSSBot free?

PaSSBot costs $34.99, with no in-app purchases.

### Which has better reviews, SWAM Contrabassoon or PaSSBot?

SWAM Contrabassoon and PaSSBot are both rated 5.0 out of 5 on the App Store, from 1 and 8 ratings respectively.

### Do SWAM Contrabassoon or PaSSBot have ads?

Neither SWAM Contrabassoon nor PaSSBot shows ads.

### Which is updated more often, SWAM Contrabassoon or PaSSBot?

SWAM Contrabassoon ships an update every 2 months, and PaSSBot every 4 months. Most recently, SWAM Contrabassoon was updated on October 17, 2026 and PaSSBot on October 23, 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.*