# AUM vs Bluetooth MIDI Connect

The clearest difference is review sentiment: AUM at 82% against Bluetooth MIDI Connect's 25%. AUM also leads on rating (4.7 vs 2.5) and update cadence (every 3 months vs every 44 months). Bluetooth MIDI Connect's advantage is price (Free vs $24.99) and in-app purchases (none vs 4). On ads and device support there is nothing between them.

Bluetooth MIDI Connect is free to download; AUM costs $24.99 up front. AUM sells 4 one-off in-app purchases. Bluetooth MIDI Connect asks for nothing beyond the download.

AUM holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: AUM has 535 ratings behind it against 60, 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 25% of Bluetooth MIDI Connect's.

AUM ships an update every 3 months, Bluetooth MIDI Connect every 44 months. The most recent releases landed on November 11, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | AUM | Bluetooth MIDI Connect |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Rating | **[4.7 (535 ratings)](https://appshunter.io/ios/app/aum-audio-mixer/id1055636344/reviews)** | [2.5 (60 ratings)](https://appshunter.io/ios/app/bluetooth-midi-connect/id1108321791/reviews) |
| Number of ratings | **535** | 60 |
| Positive reviews | **81.9% of reviews** | 24.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 44 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 3 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kymatica AB](https://appshunter.io/developer/522046659) | [KORG INC.](https://appshunter.io/developer/363714046) |

## What reviewers say

### AUM

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

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


### Bluetooth MIDI Connect

[App page](https://appshunter.io/ios/app/bluetooth-midi-connect/id1108321791)

Wirelessly connect Korg's Bluetooth MIDI controllers to your iPhone or iPad. This app enables seamless integration for a variety of Korg devices, enhancing your mobile music production setup.

**Highlights:** Wireless Bluetooth MIDI connection, Connects to Korg controllers, Compatible with iPhone/iPad, Seamless integration for music production

**In-app purchases:** none


## Frequently asked questions

### Is AUM free?

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

### Is Bluetooth MIDI Connect free?

Bluetooth MIDI Connect is free to download, with no in-app purchases.

### Which has better reviews, AUM or Bluetooth MIDI Connect?

AUM is rated higher. AUM averages 4.7 out of 5 from 535 ratings, while Bluetooth MIDI Connect averages 2.5 from 60 ratings.

### Do AUM or Bluetooth MIDI Connect have ads?

Neither AUM nor Bluetooth MIDI Connect shows ads.

### Which is updated more often, AUM or Bluetooth MIDI Connect?

AUM ships an update every 3 months, and Bluetooth MIDI Connect every 44 months. Most recently, AUM was updated on November 11, 2026 and Bluetooth MIDI Connect on November 6, 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.*