Comparison

Viking Synth vs UNO Synth Editor

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

UNO Synth Editor

This app provides advanced control for a specific analog synthesizer, allowing users to manage presets, shape sounds, and configure global and MIDI settings. It offers access to all synth engine elements and includes artist-created presets for inspiration.

Highlights
  • Preset management and transfer
  • Full control over synth engine
  • Sound shaping with envelopes and LFOs
  • Arpeggiator and keyboard controls
  • Global and MIDI settings configuration
  • Artist preset library
Read full description

**New: Librarian feature & Artist Presets** UNO Synth Editor’s Presets tab lets you easily manage presets and transfer them between your Mac/PC/iOS device and UNO Synth. Browse, audition and search, arrange presets into custom categories, and easily add and re-order presets on UNO Synth itself. And bulk transfer makes it easy to quickly prepare the Synth for performances. UNO Synth Editor also now offers presets from VIP artists like Synthmania, HaQ AttaQ and more, covering a wealth of styles and genres to inspire your creativity. UNO Synth Editor is the companion app for IK’s UNO Synth. Easily access and control all the aspects of this powerful analog synthesizer from your iPhone or iPad while UNO Synth is connected. UNO Synth Editor gives you enhanced access to every element of the synth engine for massive sound-shaping potential. Adjust continuously variable waveshapes and pulse-width modulation, and use full access to the Attack, Decay, Sustain and Release controls of both the filter and amplitude envelopes for even more in-depth sound design. Arpeggiator and keyboard controls help you prep for live shows. Lastly, UNO Synth Editor gives you control over the hardware unit’s global and MIDI settings, making it easier to configure UNO Synth for more complex setups and rigs. Features: • Powerful editor for use with IK’s UNO Synth analog synthesizer • Full control over all features of the hardware unit • Instant access to full Attack, Decay, Sustain, and Release filter controls • Adjust settings for Live effects like Vibrato, Tremolo, and Wah • Full 88-key keyboard for easier programming of arpeggios and sequences • Pitch and mod wheels for more dynamic control of your playing • Advanced access to the on-board Arpeggiator • New librarian tab to sort & categorize presets & transfer between UNO and the app • Global and MIDI controls for faster setup of advanced configurations 
Requires UNO Synth with firmware version 1.1. Firmware updater can be downloaded from www.ikmultimedia.com/userarea after registration of the unit.

Screenshots

Viking Synth4 screens
UNO Synth Editor4 screens

Verdict

The call

The clearest difference is price: UNO Synth Editor at Free against Viking Synth's $3.99. UNO Synth Editor also leads on iOS requirement (9.3 vs 12.0). Viking Synth's advantage is rating (4.7 vs 3.8) and review sentiment (71% vs 33%). On ads, in-app purchases and device support 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

UNO Synth Editor 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 3.8. Both are backed by a comparable volume of ratings — 42 and 11 respectively. Written reviews point the same way: 71% of Viking Synth's written reviews are positive against 33% of UNO Synth Editor's.

UpkeepUpdate frequency

Viking Synth ships an update every 4 months, UNO Synth Editor every 9 months. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

Scorecard7 real differences · 3 level
Viking Synth versus UNO Synth Editor: the parameters behind the verdict, then further details
ParameterViking SynthUNO Synth Editor
Price$3.99Free — better
Rating4.7 (42 ratings) — better3.8 (11 ratings)
Positive reviews71.2% of reviews — better33.3% of reviews
Number of ratings42 — better11
Update frequencyEvery 4 months — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.09.3 — better
Further details — not scored
Size11 MB8 MB
Age rating4+4+
DeveloperBlamsoft, Inc.IK Multimedia US, LLC

Customer experience

Viking Synth

All ratings42 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews66 reviews
Positive71.2%
Neutral10.6%
Negative18.2%

UNO Synth Editor

All ratings11 ratings
Positive72.7%
Neutral9.1%
Negative18.2%
Written reviews12 reviews
Positive33.3%
Neutral8.3%
Negative58.3%

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

UNO Synth Editor

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Viking Synth

No in-app purchases

None

UNO Synth Editor

No in-app purchases

Questions

Is Viking Synth free?
Viking Synth costs $3.99, with no in-app purchases.
Is UNO Synth Editor free?
UNO Synth Editor is free to download, with no in-app purchases.
Which has better reviews, Viking Synth or UNO Synth Editor?
Viking Synth is rated higher. Viking Synth averages 4.7 out of 5 from 42 ratings, while UNO Synth Editor averages 3.8 from 11 ratings.
Do Viking Synth or UNO Synth Editor have ads?
Neither Viking Synth nor UNO Synth Editor shows ads.
Which is updated more often, Viking Synth or UNO Synth Editor?
Viking Synth ships an update every 4 months, and UNO Synth Editor every 9 months. Most recently, Viking Synth was updated on October 12, 2026 and UNO Synth Editor on October 9, 2026.

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