# Motion Synth vs RRS Ivoks

The clearest difference is rating: RRS Ivoks at 4.4 against Motion Synth's 3.5. RRS Ivoks also leads on update cadence (fortnightly vs every 4 months). Motion Synth's advantage is in-app purchases (none vs 1) and review sentiment (73% vs 63%). 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. Motion Synth asks for nothing beyond the download.

RRS Ivoks holds the better App Store score, 4.4 against 3.5. Both are backed by a comparable volume of ratings — 40 and 46 respectively. Written reviews complicate that: 73% of Motion Synth's written reviews are positive against 63% of RRS Ivoks's, so the app with the better star average is not the one people write more warmly about.

Motion Synth ships an update every 4 months, RRS Ivoks fortnightly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Motion Synth | RRS Ivoks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (40 ratings)](https://appshunter.io/ios/app/motion-synth/id945266624/reviews) | **[4.4 (46 ratings)](https://appshunter.io/ios/app/rrs-ivoks/id6443504248/reviews)** |
| Number of ratings | 40 | **46** |
| Positive reviews | **73.3% of reviews** | 63.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 48 MB | 19 MB |
| Requires iOS | **9.0** | 10.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AUUG](https://appshunter.io/developer/945266623) | [RRS, OOO](https://appshunter.io/developer/1486125568) |

## What reviewers say

### Motion Synth

[App page](https://appshunter.io/ios/app/motion-synth/id945266624)

This app turns your iPhone or iPod touch into a musical instrument. Play notes with touch and control sound with motion. It can be used standalone, with other iOS music apps, or even external hardware and laptop software.

**Highlights:** Play notes via touch, Shape sound through motion, Control in-app sounds, Control other iOS music apps, Control external hardware synths, Control laptop audio/visual software

**Features:** macOS Compatibility

**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 Motion Synth free?

Motion Synth 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, Motion Synth or RRS Ivoks?

RRS Ivoks is rated higher. Motion Synth averages 3.5 out of 5 from 40 ratings, while RRS Ivoks averages 4.4 from 46 ratings.

### Do Motion Synth or RRS Ivoks have ads?

Neither Motion Synth nor RRS Ivoks shows ads.

### Which is updated more often, Motion Synth or RRS Ivoks?

Motion Synth ships an update every 4 months, and RRS Ivoks fortnightly. Most recently, Motion Synth was updated on November 1, 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.*