# KORG cortosia vs Dexed Synth

The clearest difference is rating: KORG cortosia at 4.2 against Dexed Synth's 3.3. KORG cortosia also leads on review sentiment (48% vs 30%) and iOS requirement (12.0 vs 15.0). Dexed Synth's advantage is price ($3.99 vs $9.99) and ratings volume (40 vs 6). On update cadence, ads, in-app purchases and chart position there is nothing between them.

KORG cortosia costs $9.99 and Dexed Synth $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

KORG cortosia holds the better App Store score, 4.2 against 3.3. That said, the two scores are not equally well evidenced: Dexed Synth has 40 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 48% of KORG cortosia's written reviews are positive against 30% of Dexed Synth's.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on September 23, 2026.

## The numbers

| Metric | KORG cortosia | Dexed Synth |
| --- | --- | --- |
| Price | $9.99 | **$3.99** |
| Rating | **[4.2 (6 ratings)](https://appshunter.io/ios/app/korg-cortosia/id952982019/reviews)** | [3.3 (40 ratings)](https://appshunter.io/ios/app/dexed-synth/id1462551596/reviews) |
| Number of ratings | 6 | **40** |
| Positive reviews | **47.8% of reviews** | 29.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | **Free** |
| Best chart rank | #190 | **#152** |
| Size | 35 MB | 105 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [George Rosar](https://appshunter.io/developer/1462550889) |

## What reviewers say

### KORG cortosia

[App page](https://appshunter.io/ios/app/korg-cortosia/id952982019)

**Currently charting:** #190 Top Paid · Music (US App Store)

This app helps musicians improve their sound quality by analyzing five key elements of performance in real-time. It provides instant feedback, tracks daily progress, and allows users to compare their skills globally. Ideal for beginners and intermediate players seeking to refine their technique.

**Highlights:** Real-time analysis of five 'good sound' elements, Instant scoring on a 100-point scale, Daily practice recording and progress tracking, Global ranking for 'good sound' competition, Supports multiple wind and string instruments, Model tone comparison

**In-app purchases:** none


### Dexed Synth

[App page](https://appshunter.io/ios/app/dexed-synth/id1462551596)

**Currently charting:** #152 Top Paid · Music (US App Store)

This app brings a powerful FM synthesizer to your mobile device, offering a vast library of sounds. It integrates with popular DAWs and supports external MIDI controllers for enhanced control and performance.

**Highlights:** FM Synthesizer port, Over 20,000 cartridges with 32 patches each, AudioUnit AUv3 plugin support, MIDI controller input via USB, Lock scroll and parameter locking, MIDI CC mapping

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

**In-app purchases:** none


## Frequently asked questions

### Is KORG cortosia free?

KORG cortosia costs $9.99, with no in-app purchases.

### Is Dexed Synth free?

Dexed Synth costs $3.99, with no in-app purchases.

### Which has better reviews, KORG cortosia or Dexed Synth?

KORG cortosia is rated higher. KORG cortosia averages 4.2 out of 5 from 6 ratings, while Dexed Synth averages 3.3 from 40 ratings.

### Do KORG cortosia or Dexed Synth have ads?

Neither KORG cortosia nor Dexed Synth shows ads.

### Which is updated more often, KORG cortosia or Dexed Synth?

KORG cortosia ships an update every 2 months, and Dexed Synth every 2 months. Most recently, KORG cortosia was updated on September 23, 2026 and Dexed Synth on September 23, 2026.

### Which is more popular, KORG cortosia or Dexed Synth?

KORG cortosia currently peaks at #190 in the App Store charts, and Dexed Synth at #152. Chart position reflects recent download velocity rather than total install base.

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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.*