# Virtual Technician vs AUM

The clearest difference is price: Virtual Technician at Free against AUM's $24.99. Virtual Technician also leads on in-app purchases (none vs 4) and iOS requirement (9.0 vs 12.0). AUM's advantage is review sentiment (82% vs 39%) and rating (4.7 vs 2.6). On ads there is nothing between them.

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

AUM holds the better App Store score, 4.7 against 2.6. That said, the two scores are not equally well evidenced: AUM has 535 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 39% of Virtual Technician's written reviews are positive against 82% of AUM's.

Virtual Technician ships an update every 7 months, AUM every 3 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Virtual Technician | AUM |
| --- | --- | --- |
| Price | **Free** | $24.99 |
| Rating | [2.6 (9 ratings)](https://appshunter.io/ios/app/virtual-technician/id948579667/reviews) | **[4.7 (535 ratings)](https://appshunter.io/ios/app/aum-audio-mixer/id1055636344/reviews)** |
| Number of ratings | 9 | **535** |
| Positive reviews | 38.7% of reviews | **81.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 13 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kawai Musical Instruments Manufacturing Co., Ltd.](https://appshunter.io/developer/448581784) | [Kymatica AB](https://appshunter.io/developer/522046659) |

## What reviewers say

### Virtual Technician

[App page](https://appshunter.io/ios/app/virtual-technician/id948579667)

This app allows musicians to digitally adjust the sound, touch, and tuning of their Kawai digital piano. Shape the piano's character in real-time with an intuitive interface, learning about acoustic piano adjustments.

**Highlights:** Adjust sound, touch, and tuning, Simulates professional piano technician refinements, Shape piano character to personal preferences, Regulate hammer and key release noises, Fine-tune string, lid, and damper resonances, Intuitive iPad app interface, Learn acoustic piano characteristics

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Virtual Technician free?

Virtual Technician is free to download, with no in-app purchases.

### Is AUM free?

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

### Which has better reviews, Virtual Technician or AUM?

AUM is rated higher. Virtual Technician averages 2.6 out of 5 from 9 ratings, while AUM averages 4.7 from 535 ratings.

### Do Virtual Technician or AUM have ads?

Neither Virtual Technician nor AUM shows ads.

### Which is updated more often, Virtual Technician or AUM?

Virtual Technician ships an update every 7 months, and AUM every 3 months. Most recently, Virtual Technician was updated on November 1, 2026 and AUM on November 2, 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.*