# Ruismaker FM vs Agonizer

The clearest difference is in-app purchases: Ruismaker FM at none against Agonizer's 3. Ruismaker FM also leads on update cadence (every 5 weeks vs every 5 months) and price ($4.99 vs $7.99). Agonizer's advantage is chart position (#194 vs unranked) and ratings volume (203 vs 54). On rating, review sentiment, ads and device support there is nothing between them.

Ruismaker FM costs $4.99 and Agonizer $7.99 up front. Agonizer sells 3 one-off in-app purchases. Ruismaker FM asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Ruismaker FM against 4.8 for Agonizer. Both are backed by a comparable volume of ratings — 54 and 203 respectively. Written reviews are what separate them: 83% of Ruismaker FM's written reviews are positive against 78% of Agonizer's.

Ruismaker FM ships an update every 5 weeks, Agonizer every 5 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Ruismaker FM | Agonizer |
| --- | --- | --- |
| Price | **$4.99** | $7.99 |
| Rating | **[5.0 (54 ratings)](https://appshunter.io/ios/app/ruismaker-fm/id1143644577/reviews)** | [4.8 (203 ratings)](https://appshunter.io/ios/app/agonizer/id1499426175/reviews) |
| Number of ratings | 54 | **203** |
| Positive reviews | **83.3% of reviews** | 78.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#194** |
| Size | 8 MB | 362 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bram Bos](https://appshunter.io/developer/325340444) | [Kai Aras](https://appshunter.io/developer/370820899) |

## What reviewers say

### Ruismaker FM

[App page](https://appshunter.io/ios/app/ruismaker-fm/id1143644577)

Design unique percussion sounds from scratch with a flexible synthesis engine. Create everything from traditional drums to unconventional effects. Offers a standalone Euclidean sequencer for pattern creation and export options.

**Highlights:** FM synthesis engine for percussion, Create custom drum sounds, Euclidean sequencer, AUv3 compatible, No samples used, MIDI CC controllable

**Features:** Vision Pro support

**In-app purchases:** none


### Agonizer

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

**Currently charting:** #194 Top Paid · Music (US App Store)

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 |
| --- | --- | --- |
| Neon Nightmare Pack | $1.99 | one-time |
| Chrome Oasis Pack | $1.99 | one-time |
| Circuit Bender Pack | $1.99 | 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


## Frequently asked questions

### Is Ruismaker FM free?

Ruismaker FM costs $4.99, with no in-app purchases.

### Is Agonizer free?

Agonizer costs $7.99, and also offers in-app purchases.

### Which has better reviews, Ruismaker FM or Agonizer?

Ruismaker FM is rated higher. Ruismaker FM averages 5.0 out of 5 from 54 ratings, while Agonizer averages 4.8 from 203 ratings.

### Do Ruismaker FM or Agonizer have ads?

Neither Ruismaker FM nor Agonizer shows ads.

### Which is updated more often, Ruismaker FM or Agonizer?

Ruismaker FM ships an update every 5 weeks, and Agonizer every 5 months. Most recently, Ruismaker FM was updated on October 24, 2026 and Agonizer on October 29, 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.*