# AU3FX vs BounceBud Physics Based MIDI

The clearest difference is update cadence: BounceBud Physics Based MIDI at every 5 weeks against AU3FX's every 6 months. BounceBud Physics Based MIDI also leads on price ($3.99 vs $4.99). On rating, review sentiment, ratings volume and ads there is nothing between them.

AU3FX costs $4.99 and BounceBud Physics Based MIDI $3.99 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 AU3FX against 5.0 for BounceBud Physics Based MIDI. Both are backed by a comparable volume of ratings — 14 and 11 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

AU3FX ships an update every 6 months, BounceBud Physics Based MIDI every 5 weeks. The most recent releases landed on September 26, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | AU3FX | BounceBud Physics Based MIDI |
| --- | --- | --- |
| Price | $4.99 | **$3.99** |
| Rating | [5.0 (14 ratings)](https://appshunter.io/ios/app/au3fxspace/id1540779621/reviews) | [5.0 (11 ratings)](https://appshunter.io/ios/app/bouncebud-physics-based-midi/id6464171933/reviews) |
| Number of ratings | **14** | 11 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 2 MB | 6 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kymatica AB](https://appshunter.io/developer/522046659) | [Cem Olcay](https://appshunter.io/developer/523633853) |

## What reviewers say

### AU3FX

[App page](https://appshunter.io/ios/app/au3fxspace/id1540779621)

This professional audio effect plugin offers high-quality real-time reverb for iOS devices. It allows for extensive parameter tweaking to create a vast range of sonic spaces, from intimate rooms to infinite expanses. The app includes built-in presets and filters, with full external control and session saving capabilities.

**Highlights:** High quality 32-bit DSP engine, Extensive parameter tweaking, Built-in resonant filters, Bundled presets, Multiple instances, Save/load session state, External parameter control

**Features:** Vision Pro support

**In-app purchases:** none


### BounceBud Physics Based MIDI

[App page](https://appshunter.io/ios/app/bouncebud-physics-based-midi/id6464171933)

This app generates MIDI notes through a unique physics-based system. Balls collide with customizable keyboards, triggering MIDI events. It offers extensive control over note scales, velocity, and MIDI channels for diverse musical creations.

**Highlights:** Physics-based generative MIDI sequencing, Customizable keyboards with MIDI note triggers, Adjustable ball count, speed, and size, Configurable key/scale, velocity, and octave ranges, Individual MIDI output per keyboard, MIDI input for 'shoot walls' interaction, Toggleable ball collision behavior

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

**In-app purchases:** none


## Frequently asked questions

### Is AU3FX free?

AU3FX costs $4.99, with no in-app purchases.

### Is BounceBud Physics Based MIDI free?

BounceBud Physics Based MIDI costs $3.99, with no in-app purchases.

### Which has better reviews, AU3FX or BounceBud Physics Based MIDI?

AU3FX and BounceBud Physics Based MIDI are both rated 5.0 out of 5 on the App Store, from 14 and 11 ratings respectively.

### Do AU3FX or BounceBud Physics Based MIDI have ads?

Neither AU3FX nor BounceBud Physics Based MIDI shows ads.

### Which is updated more often, AU3FX or BounceBud Physics Based MIDI?

AU3FX ships an update every 6 months, and BounceBud Physics Based MIDI every 5 weeks. Most recently, AU3FX was updated on September 26, 2026 and BounceBud Physics Based MIDI on September 21, 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.*