# Viking Synth vs CuSnP

The clearest difference is price: CuSnP at Free against Viking Synth's $3.99. CuSnP also leads on review sentiment (100% vs 69%). On rating, ratings volume, update cadence and ads there is nothing between them.

CuSnP is free to download; Viking Synth costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.7 for Viking Synth against 4.8 for CuSnP. Both are backed by a comparable volume of ratings — 42 and 36 respectively. Written reviews are what separate them: 69% of Viking Synth's written reviews are positive against 100% of CuSnP's.

Viking Synth ships an update every 4 months, CuSnP every 2 months. The most recent releases landed on September 23, 2026 and July 7, 2026 respectively.

## The numbers

| Metric | Viking Synth | CuSnP |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.7 (42 ratings)](https://appshunter.io/ios/app/viking-synth/id1085274012/reviews) | **[4.8 (36 ratings)](https://appshunter.io/ios/app/cusnp/id1418236738/reviews)** |
| Number of ratings | **42** | 36 |
| Positive reviews | 69.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 11 MB | 9 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [Neon Silicon](https://appshunter.io/developer/1409314093) |

## 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


### CuSnP

[App page](https://appshunter.io/ios/app/cusnp/id1418236738)

This app acts as a container for a sympathetic string simulation Audio Unit Extension. It requires another application to function, where it generates resonant sounds based on input audio. It's designed for musicians and audio producers.

**Highlights:** Sympathetic string simulation, Audio Unit Extension (AU), Resonates with input audio, Container for AU functionality, Documentation included

**In-app purchases:** none


## Frequently asked questions

### Is Viking Synth free?

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

### Is CuSnP free?

CuSnP is free to download, with no in-app purchases.

### Which has better reviews, Viking Synth or CuSnP?

CuSnP is rated higher. Viking Synth averages 4.7 out of 5 from 42 ratings, while CuSnP averages 4.8 from 36 ratings.

### Do Viking Synth or CuSnP have ads?

Neither Viking Synth nor CuSnP shows ads.

### Which is updated more often, Viking Synth or CuSnP?

Viking Synth ships an update every 4 months, and CuSnP every 2 months. Most recently, Viking Synth was updated on September 23, 2026 and CuSnP on July 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.*