# AUM vs K Machine audio visual engine

The clearest difference is price: K Machine audio visual engine at $8.99 against AUM's $24.99. K Machine audio visual engine also leads on in-app purchases (none vs 4) and update cadence (every 4 weeks vs every 3 months). AUM's advantage is rating (4.7 vs 3.7) and review sentiment (82% vs 45%). On ads and device support there is nothing between them.

AUM costs $24.99 and K Machine audio visual engine $8.99 up front. AUM sells 4 one-off in-app purchases. K Machine audio visual engine asks for nothing beyond the download.

AUM holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: AUM has 534 ratings behind it against 25, so its average is the more settled of the two. Written reviews point the same way: 82% of AUM's written reviews are positive against 45% of K Machine audio visual engine's.

AUM ships an update every 3 months, K Machine audio visual engine every 4 weeks. The most recent releases landed on October 26, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | AUM | K Machine audio visual engine |
| --- | --- | --- |
| Price | $24.99 | **$8.99** |
| Rating | **[4.7 (534 ratings)](https://appshunter.io/ios/app/aum-audio-mixer/id1055636344/reviews)** | [3.7 (25 ratings)](https://appshunter.io/ios/app/k-machine-audio-visual-engine/id1095617380/reviews) |
| Number of ratings | **534** | 25 |
| Positive reviews | **81.9% of reviews** | 45.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#100** | — |
| Size | 13 MB | 175 MB |
| Requires iOS | 12.0 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kymatica AB](https://appshunter.io/developer/522046659) | [Dominique Baillot](https://appshunter.io/developer/973863389) |

## What reviewers say

### AUM

[App page](https://appshunter.io/ios/app/aum-audio-mixer/id1055636344)

**Currently charting:** #100 Top Paid · Music (US App Store)

This app is a versatile audio mixer, recorder, and connection hub for mobile devices. It allows users to connect various audio sources, route signals, apply effects, and record mixes with high fidelity. It supports advanced features like MIDI control, synchronization, and integration with other audio apps and hardware.

**Highlights:** Connect hardware inputs/outputs, Route audio and MIDI, Host Audio Unit extensions, Record mixes and individual tracks, Synchronize with Ableton Link, Built-in processing nodes, MIDI control and routing

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $4.99 | one-time |
| Huge Tip | $9.99 | one-time |

**What reviewers like**

- 👍 Excellent audio routing and mixing capabilities
- 🚀 Powerful and flexible workflow
- 💡 Seamless integration with AUv3 and IAA apps
- 👍 Intuitive and clean user interface
- 👍 Reliable and stable performance

**What reviewers complain about**

- 🐛 Occasional crashes or stability issues
- 💡 Lack of MIDI clock sync receive functionality
- 💡 Limited visual customization options (e.g. channel sizes)
- 🐛 Compatibility issues with some hardware interfaces

**Reported bugs**

- Crashes or freezes when using certain plugin combinations
- Compatibility issues with iOS 15 and newer
- Inconsistent MIDI transport controls

**Requested features**

- Add MIDI clock sync receive capability
- Implement a timeline/sequencer view
- Provide more visual customization options
- Improve support for external hardware integration


### K Machine audio visual engine

[App page](https://appshunter.io/ios/app/k-machine-audio-visual-engine/id1095617380)

Create dynamic and vibrant audio-visual animations with this powerful instrument. It combines a sound sample sequencer with a vertex shader sequencer for live-oriented audiovisual composition. Import your own sounds and visuals to craft unique experiences.

**Highlights:** Audio sample sequencer, Vertex shader sequencer, Import custom sounds (WAV, AIFF), Import custom vertex shaders, Live video capture, Second screen projection, Ableton Link synchronization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AUM free?

AUM costs $24.99, and also offers in-app purchases.

### Is K Machine audio visual engine free?

K Machine audio visual engine costs $8.99, with no in-app purchases.

### Which has better reviews, AUM or K Machine audio visual engine?

AUM is rated higher. AUM averages 4.7 out of 5 from 534 ratings, while K Machine audio visual engine averages 3.7 from 25 ratings.

### Do AUM or K Machine audio visual engine have ads?

Neither AUM nor K Machine audio visual engine shows ads.

### Which is updated more often, AUM or K Machine audio visual engine?

AUM ships an update every 3 months, and K Machine audio visual engine every 4 weeks. Most recently, AUM was updated on October 26, 2026 and K Machine audio visual engine on October 21, 2026.

---

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