# AudioLayer vs SWAM Viola

The clearest difference is price: AudioLayer at $12.99 against SWAM Viola's $29.99. AudioLayer also leads on ratings volume (181 vs 6) and update cadence (fortnightly vs every 5 weeks). SWAM Viola's advantage is review sentiment (100% vs 56%) and in-app purchases (none vs 1). On rating, ads and device support there is nothing between them.

AudioLayer costs $12.99 and SWAM Viola $29.99 up front. AudioLayer sells 1 one-off in-app purchase. SWAM Viola asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for AudioLayer against 4.3 for SWAM Viola. That said, the two scores are not equally well evidenced: AudioLayer has 181 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 56% of AudioLayer's written reviews are positive against 100% of SWAM Viola's.

AudioLayer ships an update fortnightly, SWAM Viola every 5 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | AudioLayer | SWAM Viola |
| --- | --- | --- |
| Price | **$12.99** | $29.99 |
| Rating | [4.3 (181 ratings)](https://appshunter.io/ios/app/audiolayer/id1381478666/reviews) | **[4.3 (6 ratings)](https://appshunter.io/ios/app/swam-viola/id1458130582/reviews)** |
| Number of ratings | **181** | 6 |
| Positive reviews | 56.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 242 MB | 103 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Harry Gohs](https://appshunter.io/developer/382428644) | [Audio Modeling](https://appshunter.io/developer/1326331126) |

## What reviewers say

### AudioLayer

[App page](https://appshunter.io/ios/app/audiolayer/id1381478666)

This app is a powerful mobile multi-sampler for music production, offering advanced features for creating and manipulating complex instruments. It integrates seamlessly with iOS production environments and supports iCloud for easy collaboration and storage.

**Highlights:** Streaming Sample Engine (SSE), Hierarchical Layer and Zone editing, Seamless Instrument Switching (SIS), Integrated audio sample recorder, Auto Sampler for hardware synths, AUv3 AudioUnit integration, iCloud storage and collaboration

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SoundFont Import | $3.99 | one-time |

**What reviewers like**

- 🎹 Powerful multi-layer sampling capabilities
- 📥 EXS24 and SFZ file import support
- 🎯 Round-robin functionality for realistic instruments
- ⚡ Efficient performance on older devices
- 🎚️ Comprehensive effects rack with quality sound

**What reviewers complain about**

- 🐛 Frequent crashes across multiple iOS versions
- ⚠️ Stability issues in AUM and other hosts
- 🔌 High CPU/DSP usage causing performance spikes
- 🔋 Battery drain and device heating
- ❌ Missing undo function

**Reported bugs**

- App crashes on startup (splash screen)
- Reverb and chorus effects cause sound to disappear
- Pitch resets to -24 after stopping Logic Pro playback
- Layer voice polyphony controls not working properly
- SFZ batch import distributes samples incorrectly across layers

**Requested features**

- Time-stretching/pitch-shifting capability
- Program Change MIDI support
- Undo/Redo functionality
- GigaSampler .gig library support
- Soundfont SF2 import (now paid feature)


### SWAM Viola

[App page](https://appshunter.io/ios/app/swam-viola/id1458130582)

This virtual instrument uses physical modeling to generate realistic string performances in real-time, responding dynamically to your playing style. It offers advanced spatial control with a built-in room simulator and can be used standalone or as an AUv3 plugin. Designed for expressive control, it's suitable for various musical styles and accessible to visually impaired users.

**Highlights:** Physical modeling sound generation, Real-time dynamic response, Built-in Room Simulator (Ambiente), Standalone and AUv3 plugin support, Intuitive interface for all users, MPE and MIDI controller support, Customizable timbre, vibrato, and dynamics

**In-app purchases:** none


## Frequently asked questions

### Is AudioLayer free?

AudioLayer costs $12.99, and also offers in-app purchases.

### Is SWAM Viola free?

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

### Which has better reviews, AudioLayer or SWAM Viola?

SWAM Viola is rated higher. AudioLayer averages 4.3 out of 5 from 181 ratings, while SWAM Viola averages 4.3 from 6 ratings.

### Do AudioLayer or SWAM Viola have ads?

Neither AudioLayer nor SWAM Viola shows ads.

### Which is updated more often, AudioLayer or SWAM Viola?

AudioLayer ships an update fortnightly, and SWAM Viola every 5 weeks. Most recently, AudioLayer was updated on October 23, 2026 and SWAM Viola on October 25, 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.*