# Viking Synth vs Stereo Lag Time

The clearest difference is price: Stereo Lag Time at Free against Viking Synth's $3.99. Viking Synth's advantage is rating (4.7 vs 4.5). On review sentiment, ratings volume, update cadence and ads there is nothing between them.

Stereo Lag Time is free to download; Viking Synth costs $3.99 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 4.5. Both are backed by a comparable volume of ratings — 42 and 38 respectively. Written reviews complicate that: 69% of Viking Synth's written reviews are positive against 72% of Stereo Lag Time's, so the app with the better star average is not the one people write more warmly about.

Viking Synth ships an update every 4 months, Stereo Lag Time every 3 months. The most recent releases landed on September 23, 2026 and August 30, 2026 respectively.

## The numbers

| Metric | Viking Synth | Stereo Lag Time |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.7 (42 ratings)](https://appshunter.io/ios/app/viking-synth/id1085274012/reviews)** | [4.5 (38 ratings)](https://appshunter.io/ios/app/stereo-lag-time/id1459615373/reviews) |
| Number of ratings | **42** | 38 |
| Positive reviews | 69.4% of reviews | **72.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 11 MB | 1 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blamsoft, Inc.](https://appshunter.io/developer/1051938244) | [Blue Mangoo Consulting Company Limited](https://appshunter.io/developer/1475107602) |

## 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


### Stereo Lag Time

[App page](https://appshunter.io/ios/app/stereo-lag-time/id1459615373)

This audio unit plugin creates a subtle delay between stereo channels, mimicking the Haas effect for a wider, more natural stereo image. It offers precise control over small delays and includes pitch modulation when changing delay times.

**Highlights:** Creates stereo channel delay, Mimics Haas effect, Precise control over small delays, Pitch modulation on delay change, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Viking Synth free?

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

### Is Stereo Lag Time free?

Stereo Lag Time is free to download, with no in-app purchases.

### Which has better reviews, Viking Synth or Stereo Lag Time?

Viking Synth is rated higher. Viking Synth averages 4.7 out of 5 from 42 ratings, while Stereo Lag Time averages 4.5 from 38 ratings.

### Do Viking Synth or Stereo Lag Time have ads?

Neither Viking Synth nor Stereo Lag Time shows ads.

### Which is updated more often, Viking Synth or Stereo Lag Time?

Viking Synth ships an update every 4 months, and Stereo Lag Time every 3 months. Most recently, Viking Synth was updated on September 23, 2026 and Stereo Lag Time on August 30, 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.*