# Agonizer vs VAPolyQuad

The clearest difference is review sentiment: Agonizer at 79% against VAPolyQuad's 0%. Agonizer also leads on rating (4.8 vs 4.0) and update cadence (every 5 months vs every 22 months). VAPolyQuad's advantage is in-app purchases (none vs 3) and price ($14.99 vs $19.99). On ads and device support there is nothing between them.

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

Agonizer holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Agonizer has 203 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 79% of Agonizer's written reviews are positive against 0% of VAPolyQuad's.

Agonizer ships an update every 5 months, VAPolyQuad every 22 months. Both last shipped on September 22, 2026.

## The numbers

| Metric | Agonizer | VAPolyQuad |
| --- | --- | --- |
| Price | $19.99 | **$14.99** |
| Rating | **[4.8 (203 ratings)](https://appshunter.io/ios/app/agonizer/id1499426175/reviews)** | [4.0 (5 ratings)](https://appshunter.io/ios/app/vapolyquad/id6504518079/reviews) |
| Number of ratings | **203** | 5 |
| Positive reviews | **78.8% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 22 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 362 MB | 16 MB |
| Requires iOS | **11.0** | 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

### Agonizer

[App page](https://appshunter.io/ios/app/agonizer/id1499426175)

This app is a monophonic synthesizer focused on bass sounds, developed with a synth bass expert. It features dual wavetable oscillators, a mangle section, and built-in stereo effects. It supports MPE controllers and various audio/MIDI connectivity options for standalone or app-to-app use.

**Highlights:** Monophonic synth engine for bass, Dual wavetable oscillators, Built-in stereo effects, MPE controller support, Standalone and AUv3 operation, 140+ factory presets

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chrome Oasis Pack | $3.99 | one-time |
| Circuit Bender Pack | $3.99 | one-time |
| Neon Nightmare Pack | $4.99 | one-time |

**What reviewers like**

- 🎵 Excellent sound quality and unique bass tones
- 🎨 Intuitive and well-designed user interface
- ⚙️ Powerful modulation and sound design capabilities
- 🎛️ Wobulator feature for creative bass manipulation
- 📦 Great presets included with the app

**What reviewers complain about**

- 🐛 Keyboard legato/mono-synth behavior inconsistent
- 🐛 Frequent crashes in host applications (AUM, Cubasis, Audiobus)
- 🐛 No sound output in GarageBand and some AU hosts
- 🐛 App freezes on splash screen with iOS 18.3
- 🐛 UI responsiveness issues and knob lag

**Reported bugs**

- Keyboard does not properly handle legato/mono-synth note priority
- Crashes in Audiobus, AUM, and Cubasis host applications
- No sound output when used as AUv3 plugin in hosts
- No sound in GarageBand integration
- App freezes on splash screen with iOS 18.3

**Requested features**

- Polyphony mode or toggle between mono and poly
- Envelope drawing capability instead of preset selection
- Menu-based waveform selection instead of cycling
- Arpeggiator function
- Preset browser search and favorites filter


### VAPolyQuad

[App page](https://appshunter.io/ios/app/vapolyquad/id6504518079)

Create rich, analog-style music with this powerful polyphonic synthesizer. Explore a vast array of sound-shaping tools, including multiple oscillators, filters, and effects. Program intricate melodies and rhythms with the built-in sequencer, and seamlessly share projects across your Apple devices.

**Highlights:** Virtual analog polyphonic synthesizer, Up to 8 voice polyphony, Four oscillators per voice, Multiple resonant filters, Built-in effects suite, 16-bar sequencer with piano roll, Audio Unit Extension (AUv3) support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Agonizer free?

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

### Is VAPolyQuad free?

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

### Which has better reviews, Agonizer or VAPolyQuad?

Agonizer is rated higher. Agonizer averages 4.8 out of 5 from 203 ratings, while VAPolyQuad averages 4.0 from 5 ratings.

### Do Agonizer or VAPolyQuad have ads?

Neither Agonizer nor VAPolyQuad shows ads.

### Which is updated more often, Agonizer or VAPolyQuad?

Agonizer ships an update every 5 months, and VAPolyQuad every 22 months. Most recently, Agonizer was updated on September 22, 2026 and VAPolyQuad on September 22, 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.*