# VOLT Synth vs VAPolyMkII

The clearest difference is in-app purchases: VAPolyMkII at none against VOLT Synth's 3. VAPolyMkII also leads on price ($14.99 vs $19.99) and update cadence (weekly vs every 2 weeks). VOLT Synth's advantage is ratings volume (193 vs 11) and iOS requirement (9.0 vs 16.6). On rating, review sentiment, ads and device support there is nothing between them.

VOLT Synth costs $19.99 and VAPolyMkII $14.99 up front. VOLT Synth sells 3 one-off in-app purchases. VAPolyMkII asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for VOLT Synth against 4.5 for VAPolyMkII. That said, the two scores are not equally well evidenced: VOLT Synth has 193 ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 63% of VOLT Synth's written reviews are positive against 67% of VAPolyMkII's.

VOLT Synth ships an update every 2 weeks, VAPolyMkII weekly. Both last shipped on September 20, 2026.

## The numbers

| Metric | VOLT Synth | VAPolyMkII |
| --- | --- | --- |
| Price | $19.99 | **$14.99** |
| Rating | **[4.6 (193 ratings)](https://appshunter.io/ios/app/volt-synth/id1185984394/reviews)** | [4.5 (11 ratings)](https://appshunter.io/ios/app/vapolymkii/id6476809566/reviews) |
| Number of ratings | **193** | 11 |
| Positive reviews | 62.9% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 92 MB | 16 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Kai Aras](https://appshunter.io/developer/370820899) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## What reviewers say

### VOLT Synth

[App page](https://appshunter.io/ios/app/volt-synth/id1185984394)

This app is a virtual analog synthesizer designed for expressive sound creation. It supports multidimensional polyphonic expression (MPE) and offers a variety of synth voice features, built-in effects, and keyboard layouts. It's compatible with MPE hardware and software, as well as standard MIDI controllers.

**Highlights:** Virtual analog synthesizer, Multidimensional Polyphonic Expression (MPE), Expressive synth engine, Multiple keyboard layouts, Built-in stereo effects, 100+ factory presets, Standalone and AUv3 support

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dub Pack | Free | one-time |
| haQ attaQ paQ | $3.99 | one-time |
| Red Sky Lullaby Pack | $3.99 | one-time |

**What reviewers like**

- 🎶 Great sounds
- ✨ Intuitive UI
-  MPE integration
- 🎵 Expressive
- 💻 Good for travel

**What reviewers complain about**

- 🐛 Crashing frequently
- ⚠️ Unstable on newer iOS
- 🎛️ Cumbersome sound switching
- 📉 Poor performance
-  unresponsive controls

**Reported bugs**

- No MIDI input after 30 seconds
- Crashing when using multiple AU instances
- Presets disappear after iOS 14 update
- Standalone mode broken on recent iOS
- AU3 not working in Cubasis/NanoStudio 2

**Requested features**

- Two fields for sound forward/backward
- New features and sounds for MPE
- Dedicated strings section in presets
- Randomize function for LFOs/envelopes
- Larger fonts in preset display


### VAPolyMkII

[App page](https://appshunter.io/ios/app/vapolymkii/id6476809566)

This virtual analog synthesizer offers a 16-voice bitimbral polyphonic sound engine with two distinct filter models and extensive modulation options. It includes a built-in sequencer, various effects, and supports AudioUnit Extension for integration with DAWs. Projects can be synced across iPhone, iPad, and Mac via iCloud.

**Highlights:** 16-voice bitimbral polyphonic synthesizer, Two analog-modeled filter types, Extensive modulation capabilities, Built-in piano roll sequencer, Multiple audio effects, AudioUnit Extension (AUv3) support, iCloud Drive project syncing

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is VOLT Synth free?

VOLT Synth costs $19.99, and also offers in-app purchases.

### Is VAPolyMkII free?

VAPolyMkII costs $14.99, with no in-app purchases.

### Which has better reviews, VOLT Synth or VAPolyMkII?

VOLT Synth is rated higher. VOLT Synth averages 4.6 out of 5 from 193 ratings, while VAPolyMkII averages 4.5 from 11 ratings.

### Do VOLT Synth or VAPolyMkII have ads?

Neither VOLT Synth nor VAPolyMkII shows ads.

### Which is updated more often, VOLT Synth or VAPolyMkII?

VOLT Synth ships an update every 2 weeks, and VAPolyMkII weekly. Most recently, VOLT Synth was updated on September 20, 2026 and VAPolyMkII on September 20, 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.*