# SyncKontrol vs RRS Ivoks

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.

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.

## The numbers

| Metric | SyncKontrol | RRS Ivoks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (16 ratings)](https://appshunter.io/ios/app/synckontrol/id438617344/reviews) | **[4.4 (46 ratings)](https://appshunter.io/ios/app/rrs-ivoks/id6443504248/reviews)** |
| Number of ratings | 16 | **46** |
| Positive reviews | 50.8% of reviews | **63.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 16 MB | 19 MB |
| Requires iOS | **8.0** | 10.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [RRS, OOO](https://appshunter.io/developer/1486125568) |

## What reviewers say

### SyncKontrol

[App page](https://appshunter.io/ios/app/synckontrol/id438617344)

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.

**Highlights:** Precise tempo control, WIST sync, Tap Tempo, Swing function, MIDI clock sync, Start/pause control

**In-app purchases:** none


### RRS Ivoks

[App page](https://appshunter.io/ios/app/rrs-ivoks/id6443504248)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RRS Ivoks Unlimited | $8.99 | one-time |


## Frequently asked questions

### Is SyncKontrol free?

SyncKontrol 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, SyncKontrol or RRS Ivoks?

RRS Ivoks is rated higher. SyncKontrol averages 4.0 out of 5 from 16 ratings, while RRS Ivoks averages 4.4 from 46 ratings.

### Do SyncKontrol or RRS Ivoks have ads?

Neither SyncKontrol nor RRS Ivoks shows ads.

### Which is updated more often, SyncKontrol or RRS Ivoks?

SyncKontrol ships an update every 13 months, and RRS Ivoks fortnightly. Most recently, SyncKontrol was updated on November 4, 2026 and RRS Ivoks on November 3, 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.*