# iDousyn vs RRS Ivoks

The clearest difference is price: RRS Ivoks at Free against iDousyn's $5.99. RRS Ivoks also leads on review sentiment (63% vs 34%) and update cadence (fortnightly vs every 2 months). iDousyn's advantage is ratings volume (161 vs 46). On ads, in-app purchases, monetization model and device support there is nothing between them.

RRS Ivoks is free to download; iDousyn costs $5.99 up front. iDousyn sells 1 one-off in-app purchase and RRS Ivoks sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

RRS Ivoks holds the better App Store score, 4.4 against 4.2. Both are backed by a comparable volume of ratings — 161 and 46 respectively. Written reviews point the same way: 34% of iDousyn's written reviews are positive against 63% of RRS Ivoks's.

iDousyn ships an update every 2 months, RRS Ivoks fortnightly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | iDousyn | RRS Ivoks |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.2 (161 ratings)](https://appshunter.io/ios/app/idousyn/id421852860/reviews) | **[4.4 (46 ratings)](https://appshunter.io/ios/app/rrs-ivoks/id6443504248/reviews)** |
| Number of ratings | **161** | 46 |
| Positive reviews | 34.1% of reviews | **63.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 1.2 GB | 19 MB |
| Requires iOS | 26.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Lozada](https://appshunter.io/developer/421852863) | [RRS, OOO](https://appshunter.io/developer/1486125568) |

## What reviewers say

### iDousyn

[App page](https://appshunter.io/ios/app/idousyn/id421852860)

This app transforms your device into a professional music production tool. It features a sample-based synthesizer with dual-layer sampling, advanced filters, and a professional effects chain. Create immersive sounds and build captivating tracks with an intuitive interface and extensive sound library.

**Highlights:** Dual-layer sampling, Advanced filters and EQ, Professional effects chain, Creative chord pads, MIDI mastery, Expansive sound library

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | Free | one-time |

**What reviewers like**

- 👍 Good clean sounds
- 👍 Simple to use
- 👍 Low CPU usage
- 👍 Sounds great
- 👍 Great piano and strings app

**What reviewers complain about**

- 🐛 Ads pop up making it unplayable
- 🐛 Full version still displays full-page ads
- 🐛 Ads appear on the front page
- 🐛 Ads are annoying
- 🐛 Totally unusable product

**Reported bugs**

- App crashes immediately
- Full version displays full-page ads
- Ads appear on the front page
- New update has ads
- Implemented trackers

**Requested features**

- Adaptive Crasher (AUV3, Adaptive Cubasis and Zenbeats)
- AUV3 support
- Audiobus compatibility
- MIDI IN for better keyboard control
- Background audio option


### 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 iDousyn free?

iDousyn costs $5.99, and also offers in-app purchases.

### Is RRS Ivoks free?

RRS Ivoks is free to download, with in-app purchases available.

### Which has better reviews, iDousyn or RRS Ivoks?

RRS Ivoks is rated higher. iDousyn averages 4.2 out of 5 from 161 ratings, while RRS Ivoks averages 4.4 from 46 ratings.

### Do iDousyn or RRS Ivoks have ads?

Neither iDousyn nor RRS Ivoks shows ads.

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

iDousyn ships an update every 2 months, and RRS Ivoks fortnightly. Most recently, iDousyn 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.*