# Co vs KORG GEC5 Controller

The clearest difference is rating: KORG GEC5 Controller at 5.0 against Co's 2.6. KORG GEC5 Controller also leads on review sentiment (25% vs 8%). Co's advantage is update cadence (every 4 months vs every 11 months) and ratings volume (17 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KORG GEC5 Controller holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 17 and 4 respectively. Written reviews point the same way: 8% of Co's written reviews are positive against 25% of KORG GEC5 Controller's.

Co ships an update every 4 months, KORG GEC5 Controller every 11 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Co | KORG GEC5 Controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (17 ratings)](https://appshunter.io/ios/app/cowriter-universal/id915105799/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/korg-gec5-controller/id1073023302/reviews)** |
| Number of ratings | **17** | 4 |
| Positive reviews | 8.3% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 11 months |
| Monetization | Free | Free |
| Size | 45 MB | 22 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Don Johnston Incorporated](https://appshunter.io/developer/674099735) | [KORG INC.](https://appshunter.io/developer/363714046) |

## What reviewers say

### Co

[App page](https://appshunter.io/ios/app/cowriter-universal/id915105799)

This app provides advanced word prediction and spelling support for students. It offers grammar-smart suggestions and access to millions of topic-specific dictionaries to aid in writing. Built-in text-to-speech functionality helps users review their work.

**Highlights:** Grammar-smart word prediction, Millions of topic-specific dictionaries, Flexspell™ technology for spelling errors, Built-in text-to-speech, Personalized vocabulary and settings

**Features:** macOS Compatibility

**In-app purchases:** none


### KORG GEC5 Controller

[App page](https://appshunter.io/ios/app/korg-gec5-controller/id1073023302)

This software provides a comprehensive system for group instruction in music, language, or technology labs. It offers flexible modes for lectures, individual practice with teacher eavesdropping, and collaborative group work, enhancing classroom efficiency and engagement.

**Highlights:** Multiple practice and instruction modes, Fully-digital stereo sound, Intuitive software user interface, Flexible audio routing, Open curriculum compatibility, Lecture, Practice, and Group modes

**In-app purchases:** none


## Frequently asked questions

### Is Co free?

Co is free to download, with no in-app purchases.

### Is KORG GEC5 Controller free?

KORG GEC5 Controller is free to download, with no in-app purchases.

### Which has better reviews, Co or KORG GEC5 Controller?

KORG GEC5 Controller is rated higher. Co averages 2.6 out of 5 from 17 ratings, while KORG GEC5 Controller averages 5.0 from 4 ratings.

### Do Co or KORG GEC5 Controller have ads?

Neither Co nor KORG GEC5 Controller shows ads.

### Which is updated more often, Co or KORG GEC5 Controller?

Co ships an update every 4 months, and KORG GEC5 Controller every 11 months. Most recently, Co was updated on November 1, 2026 and KORG GEC5 Controller on November 2, 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.*