# Agonizer vs AddStation

The clearest difference is price: AddStation at $8.99 against Agonizer's $19.99. AddStation also leads on in-app purchases (none vs 3) and update cadence (weekly vs every 5 months). Agonizer's advantage is rating (4.8 vs 4.5) and ratings volume (203 vs 43). On review sentiment, ads, device support and iOS requirement there is nothing between them.

Agonizer costs $19.99 and AddStation $8.99 up front. Agonizer sells 3 one-off in-app purchases. AddStation asks for nothing beyond the download.

Agonizer holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 203 and 43 respectively. Written reviews complicate that: 78% of Agonizer's written reviews are positive against 82% of AddStation's, so the app with the better star average is not the one people write more warmly about.

Agonizer ships an update every 5 months, AddStation weekly. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Agonizer | AddStation |
| --- | --- | --- |
| Price | $19.99 | **$8.99** |
| Rating | **[4.8 (203 ratings)](https://appshunter.io/ios/app/agonizer/id1499426175/reviews)** | [4.5 (43 ratings)](https://appshunter.io/ios/app/addstation/id1500919657/reviews) |
| Number of ratings | **203** | 43 |
| Positive reviews | 77.8% of reviews | **82.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 362 MB | 133 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kai Aras](https://appshunter.io/developer/370820899) | [Harry Gohs](https://appshunter.io/developer/382428644) |

## 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


### AddStation

[App page](https://appshunter.io/ios/app/addstation/id1500919657)

Explore new sonic territories with this advanced additive synthesis tool. Create complex timbres by combining thousands of sine waves and unique morph sequencing. Integrate seamlessly with iOS production environments and enjoy a suite of built-in effects.

**Highlights:** Fractal additive synthesis, Sound morphing, Over 170 sound presets, AUv3 AudioUnit integration, Built-in effects suite, Audiobus 3 and Ableton Link support

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

**In-app purchases:** none


## Frequently asked questions

### Is Agonizer free?

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

### Is AddStation free?

AddStation costs $8.99, with no in-app purchases.

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

Agonizer is rated higher. Agonizer averages 4.8 out of 5 from 203 ratings, while AddStation averages 4.5 from 43 ratings.

### Do Agonizer or AddStation have ads?

Neither Agonizer nor AddStation shows ads.

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

Agonizer ships an update every 5 months, and AddStation weekly. Most recently, Agonizer was updated on October 14, 2026 and AddStation on October 9, 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.*