Comparison

UNO Synth Editor vs RRS Ivoks

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

Head to head
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.

About

RRS Ivoks

This app emulates analog synthesizers, offering a range of sound shaping tools including oscillators, filters, and amplifiers. It supports AUv3 hosting for integration with music production apps and provides extensive MIDI control.

Highlights
  • Analog Emulation
  • AUv3 Compatible
  • Dual Oscillators
  • Filter Block with ADSR
  • Amplifier Block with ADSR
  • Modulation (LFO) Controls
  • MIDI CC Implementation
Read full description

RRS Ivoks AUv3 instrument — comes as time-limited Demo-version for you to try. It gives you 5 minutes of Free play time. (You can reload the RRS Ivoks AUv3 instrument as many times as you want, thereby you get the Demo period again and again.) Unlimited version of RRS Ivoks AUv3 instrument comes as In-App Purchase. Features: • Analog Emulation; • Undo/Redo; • A/B comparison; • 2x/4x/8x Upsampling; • Macro controllers; • Scalable GUI. On the centre panel are located two audio-frequency oscillators: • OSC1 offers frequency Band regulator, five Waveforms and controls for LFO Modulation level plus OSC2 Cross-modulation; • OSC2 offers the same frequency Band and Waveforms, an independent control for Modulation depth, plus Detuning. Underneath these located the mixer, which offers level controls for the two Oscillators, the Noise generator, and Saturation Drive. To the right of these, located the filter block. The top half is a standard ADSR envelope — until you flip the switch «Envelope mode», when it becomes a repeating AD-envelope instead. The four controls at the bottom adjust Cut-off, Resonance, LPF to BPF switch, Modulation level and Envelope level. Next after the filter is the amplifier block, it also has ADSR envelope along with another Modulation level and Velocity sensitivity control. Again, the envelope can be switched to a Repeating Mode that generates a triangular waveform determined by the Attack and Decay settings, providing some of the instrument’s most distinctive effects. The leftmost panels house the Modulation (LFO) controls (top), Mode which offers four waveforms, including noise, and a stepped Function for sample & hold (S&H) effects, well as Speed control. And global settings such as the master Tune, master Volume, Legato mode, Monophonic and Duophonic operation and Unison switches, and the Glide control. To use Ivoks as an instrument, you need an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis and more — RRS Ivoks will appear in the list of Audio Unit instruments in the host app. MIDI CC Implementation Chart: • CC#003 => HQ • CC#009 => Saturation Drive • CC#014 => Modulator Speed • CC#015 => Modulator Mode • CC#020 => Filter Attack • CC#021 => AMP Attack • CC#022 => Filter Decay • CC#023 => AMP Decay • CC#024 => Filter Sustain • CC#025 => AMP Sustain • CC#026 => Filter Release • CC#027 => AMP Release • CC#028 => Filter Envelope Mode • CC#029 => AMP Envelope Mode • CC#030 => OSC1 Band • CC#031 => OSC2 Band • CC#085 => OSC1 Waveform • CC#086 => OSC2 Waveform • CC#087 => OSC1 XMod • CC#089 => OSC2 Detune • CC#090 => MOD to OSC1 • CC#102 => MOD to OSC2 • CC#103 => OSC1 Level • CC#104 => OSC2 Level • CC#105 => Noise Generator • CC#106 => Global Tune • CC#107 => Global Glide • CC#108 => Global Volume • CC#109 => Global Voice • CC#110 => Global Unison • CC#111 => Global Retrig • CC#112 => Filter Cut-off • CC#113 => Filter Resonance • CC#114 => Filter Mode • CC#115 => MOD to Filter • CC#116 => Filter Envelope • CC#117 => MOD to AMP • CC#118 => Velocity Sensitvity

Screenshots

UNO Synth Editor4 screens
RRS Ivoks4 screens

Verdict

The call

The clearest difference is rating: RRS Ivoks at 4.4 against UNO Synth Editor's 3.8. RRS Ivoks also leads on review sentiment (63% vs 33%) and update cadence (fortnightly vs every 9 months). UNO Synth Editor's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement 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

Both are free to download. RRS Ivoks sells 1 one-off in-app purchase. UNO Synth Editor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

RRS Ivoks holds the better App Store score, 4.4 against 3.8. Both are backed by a comparable volume of ratings — 12 and 46 respectively. Written reviews point the same way: 33% of UNO Synth Editor's written reviews are positive against 63% of RRS Ivoks's.

UpkeepUpdate frequency

UNO Synth Editor ships an update every 9 months, RRS Ivoks fortnightly. Both last shipped on October 21, 2026.

Scorecard6 real differences · 4 level
UNO Synth Editor versus RRS Ivoks: the parameters behind the verdict, then further details
ParameterUNO Synth EditorRRS Ivoks
PriceFreeFree
Rating3.8 (12 ratings)4.4 (46 ratings) — better
Positive reviews33.3% of reviews63.3% of reviews — better
Number of ratings1246 — better
Update frequencyEvery 9 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better10.0
Further details — not scored
Size8 MB19 MB
Age rating4+4+
DeveloperIK Multimedia US, LLCRRS, OOO

Customer experience

UNO Synth Editor

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

RRS Ivoks

All ratings45 ratings
Positive82.2%
Neutral4.4%
Negative13.3%
Written reviews30 reviews
Positive63.3%
Neutral3.3%
Negative33.3%

In-app purchases

None

UNO Synth Editor

No in-app purchases

1 purchases

RRS Ivoks

One-time1
  • RRS Ivoks Unlimited$8.99

Questions

Is UNO Synth Editor free?
UNO Synth Editor is free to download, with no in-app purchases.
Is RRS Ivoks free?
RRS Ivoks is free to download, with in-app purchases available.
Which has better reviews, UNO Synth Editor or RRS Ivoks?
RRS Ivoks is rated higher. UNO Synth Editor averages 3.8 out of 5 from 12 ratings, while RRS Ivoks averages 4.4 from 46 ratings.
Do UNO Synth Editor or RRS Ivoks have ads?
Neither UNO Synth Editor nor RRS Ivoks shows ads.
Which is updated more often, UNO Synth Editor or RRS Ivoks?
UNO Synth Editor ships an update every 9 months, and RRS Ivoks fortnightly. Most recently, UNO Synth Editor was updated on October 21, 2026 and RRS Ivoks on October 21, 2026.

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