# iDousyn vs Complete Rhythm Trainer

The clearest difference is review sentiment: Complete Rhythm Trainer at 88% against iDousyn's 29%. Complete Rhythm Trainer also leads on price (Free vs $4.99) and rating (4.7 vs 4.2). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Complete Rhythm Trainer is free to download; iDousyn costs $4.99 up front. iDousyn sells 1 one-off in-app purchase and Complete Rhythm Trainer sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Complete Rhythm Trainer holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 159 and 103 respectively. Written reviews point the same way: 29% of iDousyn's written reviews are positive against 88% of Complete Rhythm Trainer's.

iDousyn ships an update every 2 months, Complete Rhythm Trainer fortnightly. Both last shipped on September 21, 2026.

## The numbers

| Metric | iDousyn | Complete Rhythm Trainer |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.2 (159 ratings)](https://appshunter.io/ios/app/idousyn/id421852860/reviews) | **[4.7 (103 ratings)](https://appshunter.io/ios/app/complete-rhythm-trainer/id1550799056/reviews)** |
| Number of ratings | **159** | 103 |
| Positive reviews | 29.3% of reviews | **88.0% 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 | 54 MB |
| Requires iOS | 26.0 | **17.5** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Lozada](https://appshunter.io/developer/421852863) | [Binary Guilt](https://appshunter.io/developer/1012455470) |

## 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 |


### Complete Rhythm Trainer

[App page](https://appshunter.io/ios/app/complete-rhythm-trainer/id1550799056)

Master musical rhythm with this comprehensive training app. It offers progressive drills, diverse rhythm exercises, and interactive modes designed to make learning enjoyable. Track your progress and compete with others.

**Highlights:** 252 progressive drills, Multiple time signatures and note values, 5 drill types (imitation, reading, dictation), Arcade and polyrhythm modes, Custom drill creation, Teacher-student program features, Cloud sync

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud Sync and Web access | $0.99 | per month |
| Cloud Sync and Web access | $9.99 | per year |
| Full Version | $6.99 | one-time |


## Frequently asked questions

### Is iDousyn free?

iDousyn costs $4.99, and also offers in-app purchases.

### Is Complete Rhythm Trainer free?

Complete Rhythm Trainer is free to download, with in-app purchases available.

### Which has better reviews, iDousyn or Complete Rhythm Trainer?

Complete Rhythm Trainer is rated higher. iDousyn averages 4.2 out of 5 from 159 ratings, while Complete Rhythm Trainer averages 4.7 from 103 ratings.

### Do iDousyn or Complete Rhythm Trainer have ads?

Neither iDousyn nor Complete Rhythm Trainer shows ads.

### Which is updated more often, iDousyn or Complete Rhythm Trainer?

iDousyn ships an update every 2 months, and Complete Rhythm Trainer fortnightly. Most recently, iDousyn was updated on September 21, 2026 and Complete Rhythm Trainer on September 21, 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.*