SyncKontrol vs RRS Ivoks
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SyncKontrol
Precisely control the tempo and sync your Korg monotribe synthesizer from your iPhone. Offers tap tempo, swing functions, and WIST compatibility for seamless integration with other music apps and DAWs.
- Precise tempo control
- WIST sync
- Tap Tempo
- Swing function
- MIDI clock sync
- Start/pause control
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Control the Korg monotribe's tempo with your iPhone! SyncKontrol offers owners of Korg's monotribe Analogue Ribbon Station precise tempo control, plus the ability to sync their monotribe to WIST (Wireless sync) enabled apps! SyncKontrol allows you to control the tempo and start/pause of the monotribe Analogue Ribbon Station via the audio output of your iPhone. The app also offers Tap Tempo, a Swing function, and WIST (Wireless Sync-Start Technology) to sync monotribe to WIST-enabled apps such as Korg's iMS20, iELECTRIBE and iELECTRIBE Gorillaz™ Edition. In addition, this application receives sync from Mac based DAW software by receiving MIDI clock and play/stop commands via Wireless Network MIDI*. Korg's monotribe is a new form of synthesizer that packs an amazing array of features and technology into its compact body. The monotribe shares the analog synthesizer voice of the in-demand Korg monotron, yet quickly delves deeper into the rich, organic, and often chaotic world of analog synthesis. In addition to analog synthesis, monotribe brings together intuitive ease of use and a three-part discrete analog rhythm section, plus the proven appeal of Electribe-style sequencing. Complete with a built-in speaker and battery power, monotribe is self-contained and highly portable. [Specifications] Sequencer Section: • Tempo : 20.0 – 999.9 BPM • Tap tempo • Swing function : 50 – 75% Other: • Supports WIST (Wireless Sync-Start Technology) * Wireless Network MIDI function is still new and developing technology and therefore there are no guarantees concerning stability which can be heavily affected by traffic over the wireless network. Note : mini jack cable is necessary to connect iPhone and monotribe. Follow us on: ● Facebook : http://www.facebook.com/korg.iapps ● Twitter : http://www.twitter.com/korg_iapps
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.
- Analog Emulation
- AUv3 Compatible
- Dual Oscillators
- Filter Block with ADSR
- Amplifier Block with ADSR
- Modulation (LFO) Controls
- MIDI CC Implementation
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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
Verdict
The clearest difference is in-app purchases: SyncKontrol at none against RRS Ivoks's 1. SyncKontrol also leads on iOS requirement (8.0 vs 10.0). RRS Ivoks's advantage is update cadence (fortnightly vs every 13 months) and rating (4.4 vs 4.0). On price, ratings volume, ads 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
Both are free to download. RRS Ivoks sells 1 one-off in-app purchase. SyncKontrol asks for nothing beyond the download.
RRS Ivoks holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 16 and 46 respectively. Written reviews point the same way: 51% of SyncKontrol's written reviews are positive against 63% of RRS Ivoks's.
SyncKontrol ships an update every 13 months, RRS Ivoks fortnightly. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.
| Parameter | SyncKontrol | RRS Ivoks |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (16 ratings) | 4.4 (46 ratings) — better |
| Positive reviews | 50.8% of reviews | 63.3% of reviews — better |
| Number of ratings | 16 | 46 — better |
| Update frequency | Every 13 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 10.0 |
| Further details — not scored | ||
| Size | 16 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | KORG INC. | RRS, OOO |
Customer experience
SyncKontrol
RRS Ivoks
In-app purchases
SyncKontrol
No in-app purchases
RRS Ivoks
- RRS Ivoks Unlimited$8.99








