Comparison

Viking Synth vs Stereo Lag Time

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Viking Synth

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
Read full description

Viking Synth is an authentic emulation of a classic monophonic analog synthesizer. It has three continuously variable wave oscillators, two ladder filters with a Dual Lowpass or Highpass/Lowpass configuration, a multi-wave LFO, and two modulation busses. Viking Synth uses state of the art DSP technology to accurately reproduce the sound of the hardware. You get a desktop quality plug-in at an iOS friendly price. Viking Synth is an Audio Unit Extension Instrument (AUv3) that works as a plug-in inside host apps. Just open up your favorite host that supports Audio Unit Instruments and select it from the list of available Audio Units. Compatible with GarageBand, Cubasis, Auria, BeatMaker, AudioBus, AUM, Modstep, and more. The user interface of Viking Synth is designed for quick and intuitive control. Knobs and sliders expand during tweaking and are designed so the current value isn't hidden below your finger. The six pages divide the synth into logical sections that can be accessed quickly. The filter display acts as an XY pad for controlling cutoff and resonance. Simply double tap a knob or slider to reset it to its default value. Presets Viking Synth comes with 228 presets in the categories Bass, Bright Lead, Electro Bass, FX, Percussive Lead, Soft Lead, and Synthwave. The synth excels at thick bass and rich lead sounds. The 50 Electro Bass and 50 Synthwave presets were designed by renowned sound designer eXode. Presets work perfectly with GarageBand, Cubasis, and AUM. Oscillators At the heart of Viking are three adjustable wave oscillators. The continuously variable waveform knob gives the oscillators a unique sound that can’t be achieved with the fixed waveforms found in most synths. A noise oscillator provides three types of noise, one specifically modeled after the hardware. Modulation Two modulation busses and an LFO provide flexible modulation capabilities. All of the options hidden deep in menus on the hardware are immediately accessible with one tap. Filters The filters are classic transistor ladder filters modeled meticulously. Two DSP varieties are available allowing for either reduced CPU load or soft clipping plus three additional overdriven modes. The number of poles is adjustable for a wider range of filter sounds. Compare Viking to other synths: – Viking’s oscillators are free running, not sampled, wavetable based, or generated from a zero point – Viking’s oscillators use advanced techniques to avoid aliasing – Viking’s oscillators have instability, which is controllable through the tuning drift control – Viking’s nonlinear filter uses circuit modeling and provides soft clipping

About

Stereo Lag Time

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
Read full description

This is an audio unit plugin that puts a small delay between the left and right channels. Why would you want to do that? Here's why: We recently saw a video interview of a very famous guitarist in which his guitar was delayed a few milliseconds in the right channel. It may have been caused by unusual microphone placement, or perhaps it was just an error on the part of the person who recorded the video. Whatever the reason for it, it sounded great. He was playing into a vintage amp with no other reverb or delay, but the sound had a wide stereo image that didn't sound electronic or artificial and didn't distort the natural sound of the amp. This is commonly known as Haas effect. With most delay effects it's not so easy to get a precise, very small delay on just one channel, but this app does it with just one simple control. In case you need to modulate the effect, this plugin smoothly transitions between different delay time settings, causing a pitch shift while the delay time is on the move toward its new setting. This plugin is simple, so we are giving it away for free. Enjoy!

Screenshots

Viking Synth4 screens
Stereo Lag Time4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Viking Synth versus Stereo Lag Time: the parameters behind the verdict, then further details
ParameterViking SynthStereo Lag Time
Price$3.99Free — better
Rating4.7 (42 ratings) — better4.5 (38 ratings)
Positive reviews69.4% of reviews72.0% of reviews — better
Number of ratings42 — better38
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.012.0
Further details — not scored
Size11 MB1 MB
Age rating4+4+
DeveloperBlamsoft, Inc.Blue Mangoo Consulting Company Limited

Customer experience

Viking Synth

All ratings42 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews62 reviews
Positive69.4%
Neutral11.3%
Negative19.4%

Stereo Lag Time

All ratings38 ratings
Positive81.6%
Neutral10.5%
Negative7.9%
Written reviews25 reviews
Positive72.0%
Neutral20.0%
Negative8.0%

Bugs and requests

Viking Synth

Reported bugs

6 issues
  • Presets not showing up
  • Presets disappear
  • App not showing in AUv3 menu
  • Settings not saving after iOS 14 update
  • Crashes when opening presets browser
Show 1 more
  • Saved presets not loading

Requested features

5 requests
  • More subtle drive mode
  • Categorized preset browser
  • Polyphony option
  • Dark mode
  • More apps from developer

Stereo Lag Time

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Viking Synth

No in-app purchases

None

Stereo Lag Time

No in-app purchases

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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