# Viking Synth vs Sonic Synth

The clearest difference is review sentiment: Viking Synth at 71% against Sonic Synth's 0%. Viking Synth also leads on rating (4.7 vs 3.0) and ratings volume (41 vs 1). Sonic Synth's advantage is price ($1.99 vs $3.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Viking Synth costs $3.99 and Sonic Synth $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Viking Synth holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Viking Synth has 41 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 71% of Viking Synth's written reviews are positive against 0% of Sonic Synth's.

Viking Synth ships an update every 4 months, Sonic Synth every 6 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Viking Synth | Sonic Synth |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | **[4.7 (41 ratings)](https://appshunter.io/ios/app/viking-synth/id1085274012/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/sonic-synth-fm-synthesizer/id1104940736/reviews) |
| Number of ratings | **41** | 1 |
| Positive reviews | **71.2% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Paid | Paid |
| Size | 11 MB | 1 MB |
| Requires iOS | **12.0** | 13.0 |
| 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


### Sonic Synth

[App page](https://appshunter.io/ios/app/sonic-synth-fm-synthesizer/id1104940736)

Create a wide variety of sounds with this FM synthesizer app. It features three independent oscillators, each capable of generating four unique waveforms, and offers a responsive touch keyboard for real-time performance. Enjoy high-quality audio with a 44100 Hz sample rate.

**Highlights:** 3 independent oscillators, 4 waveform types per oscillator, Volume, modulation, tone, and detune controls, Envelope filters (attack, sustain, release), Multitouch support, Responsive piano keyboard, Core MIDI support

**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 Sonic Synth free?

Sonic Synth costs $1.99, with no in-app purchases.

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

Viking Synth is rated higher. Viking Synth averages 4.7 out of 5 from 41 ratings, while Sonic Synth averages 3.0 from 1 ratings.

### Do Viking Synth or Sonic Synth have ads?

Neither Viking Synth nor Sonic Synth shows ads.

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

Viking Synth ships an update every 4 months, and Sonic Synth every 6 months. Most recently, Viking Synth was updated on October 26, 2026 and Sonic Synth on October 24, 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.*