# iDousyn vs StringMaster Pro

The clearest difference is review sentiment: StringMaster Pro at 67% against iDousyn's 29%. StringMaster Pro also leads on in-app purchases (none vs 1) and rating (4.5 vs 4.2). iDousyn's advantage is price ($9.99 vs $14.99) and ratings volume (159 vs 20). On update cadence, ads and device support there is nothing between them.

iDousyn costs $9.99 and StringMaster Pro $14.99 up front. iDousyn sells 1 one-off in-app purchase. StringMaster Pro asks for nothing beyond the download.

StringMaster Pro holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: iDousyn has 159 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 29% of iDousyn's written reviews are positive against 67% of StringMaster Pro's.

iDousyn ships an update every 2 months, StringMaster Pro every 3 months. The most recent releases landed on October 12, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | iDousyn | StringMaster Pro |
| --- | --- | --- |
| Price | **$9.99** | $14.99 |
| Rating | [4.2 (159 ratings)](https://appshunter.io/ios/app/idousyn/id421852860/reviews) | **[4.5 (20 ratings)](https://appshunter.io/ios/app/stringmaster-pro/id972426361/reviews)** |
| Number of ratings | **159** | 20 |
| Positive reviews | 29.3% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 1.2 GB | 171 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Lozada](https://appshunter.io/developer/421852863) | [Great Apptitude Pty Ltd](https://appshunter.io/developer/1519213669) |

## 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 |


### StringMaster Pro

[App page](https://appshunter.io/ios/app/stringmaster-pro/id972426361)

This advanced music app helps musicians of all levels learn and master fretted instruments. It offers tools for chords, scales, songwriting, and includes a tuner and fretboard learning system. Supports a wide range of instruments and integrates with wireless Fretlight Guitars.

**Highlights:** Chord building and detection, Fretboard learning system, Advanced songwriting tools, Chromatic tuner and metronome, Instrument comparison, MIDI output

**In-app purchases:** none


## Frequently asked questions

### Is iDousyn free?

iDousyn costs $9.99, and also offers in-app purchases.

### Is StringMaster Pro free?

StringMaster Pro costs $14.99, with no in-app purchases.

### Which has better reviews, iDousyn or StringMaster Pro?

StringMaster Pro is rated higher. iDousyn averages 4.2 out of 5 from 159 ratings, while StringMaster Pro averages 4.5 from 20 ratings.

### Do iDousyn or StringMaster Pro have ads?

Neither iDousyn nor StringMaster Pro shows ads.

### Which is updated more often, iDousyn or StringMaster Pro?

iDousyn ships an update every 2 months, and StringMaster Pro every 3 months. Most recently, iDousyn was updated on October 12, 2026 and StringMaster Pro on September 27, 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.*