# Viking Synth vs Resonator Audio Unit

The clearest difference is update cadence: Viking Synth at every 4 months against Resonator Audio Unit's every 38 months. Viking Synth also leads on ratings volume (41 vs 3). Resonator Audio Unit's advantage is rating (5.0 vs 4.7) and price ($2.99 vs $3.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Viking Synth costs $3.99 and Resonator Audio Unit $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Resonator Audio Unit holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Viking Synth has 41 ratings behind it against 3, so its average is the more settled of the two.

Viking Synth ships an update every 4 months, Resonator Audio Unit every 38 months. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Viking Synth | Resonator Audio Unit |
| --- | --- | --- |
| Price | $3.99 | **$2.99** |
| Rating | [4.7 (41 ratings)](https://appshunter.io/ios/app/viking-synth/id1085274012/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/resonator-audio-unit/id1225597875/reviews)** |
| Number of ratings | **41** | 3 |
| Positive reviews | 71.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 38 months |
| Monetization | Paid | Paid |
| Size | 11 MB | 10 MB |
| Requires iOS | 12.0 | **10** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) |

## What reviewers say

### Viking Synth

[App page](https://appshunter.io/ios/app/viking-synth/id1085274012)

This app emulates a classic monophonic analog synthesizer with advanced DSP technology. It features three variable wave oscillators, dual ladder filters, an LFO, and two modulation busses for versatile sound design.  An intuitive interface and extensive preset library make it ideal for creating thick bass and rich lead sounds.

**Highlights:** Three continuously variable wave oscillators, Dual ladder filters (Lowpass/Highpass), Multi-wave LFO, Two modulation busses, Intuitive user interface with expandable controls, 228 presets including Bass, Lead, and Synthwave, State-of-the-art DSP for authentic sound

**In-app purchases:** none

**What reviewers like**

- 🎶 Great sound quality
- 💡 Versatile sound options
- 💰 Excellent value (free)
- 💻 Lightweight and efficient
- 🎹 Good for learning synthesis

**What reviewers complain about**

- ❓ Preset issues
- 🔌 Not a standalone app
- 🐛 Occasional crashes
- 💾 Settings not saving
- 🤷‍♂️ Difficult to find/use

**Reported bugs**

- Presets not showing up
- Presets disappear
- App not showing in AUv3 menu
- Settings not saving after iOS 14 update
- Crashes when opening presets browser

**Requested features**

- More subtle drive mode
- Categorized preset browser
- Polyphony option
- Dark mode
- More apps from developer


### Resonator Audio Unit

[App page](https://appshunter.io/ios/app/resonator-audio-unit/id1225597875)

This audio effect plugin generates natural resonances to add warmth and fullness to instruments or recordings. It offers controls for acoustic body characteristics and includes an additional reverb effect for standalone use. The app utilizes unique, realistic algorithms for its sound shaping capabilities.

**Highlights:** Natural sounding resonances, Acoustic body thickness and size control, Resonance amount control, Additional reverb effect, Standalone app mode with Efx on/off

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Viking Synth free?

Viking Synth costs $3.99, with no in-app purchases.

### Is Resonator Audio Unit free?

Resonator Audio Unit costs $2.99, with no in-app purchases.

### Which has better reviews, Viking Synth or Resonator Audio Unit?

Resonator Audio Unit is rated higher. Viking Synth averages 4.7 out of 5 from 41 ratings, while Resonator Audio Unit averages 5.0 from 3 ratings.

### Do Viking Synth or Resonator Audio Unit have ads?

Neither Viking Synth nor Resonator Audio Unit shows ads.

### Which is updated more often, Viking Synth or Resonator Audio Unit?

Viking Synth ships an update every 4 months, and Resonator Audio Unit every 38 months. Most recently, Viking Synth was updated on October 20, 2026 and Resonator Audio Unit on October 7, 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.*