# VOLT Synth vs VAPolyFM

VOLT Synth and VAPolyFM both sit at 4.6 stars, but that hides the real split: 63% of VOLT Synth's written reviews are positive against 17% of VAPolyFM's. VOLT Synth also leads on update cadence (every 2 weeks vs every 17 months) and ratings volume (193 vs 6). VAPolyFM's advantage is in-app purchases (none vs 3) and price ($14.99 vs $19.99). On rating, ads and device support there is nothing between them.

VOLT Synth costs $19.99 and VAPolyFM $14.99 up front. VOLT Synth sells 3 one-off in-app purchases. VAPolyFM 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 VAPolyFM. That said, the two scores are not equally well evidenced: VOLT Synth has 193 ratings behind it against 6, 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 17% of VAPolyFM's.

VOLT Synth ships an update every 2 weeks, VAPolyFM every 17 months. The most recent releases landed on September 20, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | VOLT Synth | VAPolyFM |
| --- | --- | --- |
| Price | $19.99 | **$14.99** |
| Rating | **[4.6 (193 ratings)](https://appshunter.io/ios/app/volt-synth/id1185984394/reviews)** | [4.5 (6 ratings)](https://appshunter.io/ios/app/vapolyfm/id6737108540/reviews) |
| Number of ratings | **193** | 6 |
| Positive reviews | **62.9% of reviews** | 16.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 17 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 92 MB | 17 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


### VAPolyFM

[App page](https://appshunter.io/ios/app/vapolyfm/id6737108540)

Create music with a versatile hybrid synthesizer offering both FM and virtual analog subtractive synthesis. Explore a wide range of effects, a built-in sequencer, and extensive MIDI support. Save and share projects seamlessly across iPhone, iPad, and Mac.

**Highlights:** FM synthesizer with 6 operators, Virtual analog subtractive synthesizer, Built-in effects (delay, chorus, reverb), Sequencer with piano roll editor, AudioUnit Extension (AUv3) support, Ableton Link and MIDI 2.0 support, iCloud Drive project sharing

**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 VAPolyFM free?

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

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

VOLT Synth is rated higher. VOLT Synth averages 4.6 out of 5 from 193 ratings, while VAPolyFM averages 4.5 from 6 ratings.

### Do VOLT Synth or VAPolyFM have ads?

Neither VOLT Synth nor VAPolyFM shows ads.

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

VOLT Synth ships an update every 2 weeks, and VAPolyFM every 17 months. Most recently, VOLT Synth was updated on September 20, 2026 and VAPolyFM on September 21, 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.*