# KeyLinker vs Cosmox Engine

The clearest difference is rating: KeyLinker at 2.3 against Cosmox Engine's 1.0. KeyLinker also leads on ratings volume (49 vs 1). Cosmox Engine's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (9.0 vs 13.0). 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.

KeyLinker holds the better App Store score, 2.3 against 1.0. That said, the two scores are not equally well evidenced: KeyLinker has 49 ratings behind it against 1, so its average is the more settled of the two.

KeyLinker ships an update every 2 months, Cosmox Engine every 3 weeks. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | KeyLinker | Cosmox Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (49 ratings)](https://appshunter.io/ios/app/keylinker/id1472490585/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/cosmox-engine/id6449379422/reviews) |
| Number of ratings | **49** | 1 |
| Positive reviews | 30.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 38 MB | 32 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ShenZhen ZhiXu Technology Co., Ltd](https://appshunter.io/developer/1472490584) | [Cosmox Technology(Shenzhen) Co.,Ltd.](https://appshunter.io/developer/1688827145) |

## What reviewers say

### KeyLinker

[App page](https://appshunter.io/ios/app/keylinker/id1472490585)

Customize and enhance your controller experience with this utility app. Modify parameters for keys, lighting, vibration, and more to suit your personal preferences. Enjoy a more personalized and responsive gaming setup.

**Highlights:** Modify key parameters, Customize lamplight settings, Adjust vibration feedback, Configure joystick and trigger, Simultaneous device connection

**Features:** Vision Pro support

**In-app purchases:** none


### Cosmox Engine

[App page](https://appshunter.io/ios/app/cosmox-engine/id6449379422)

Customize your gaming controller with advanced features like rapid fire, button mapping, and macro programming. Adjust joystick sensitivity, vibration, and trigger travel for a more immersive gaming experience. The app offers a user-friendly interface and multi-language support.

**Highlights:** Rapid Fire/Mapping/Macro Functions, Vibration/Joystick/Trigger Adjustment, Personalized Gaming Needs, Enhanced Immersion, User-Friendly Interface, Multi-Language Support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KeyLinker free?

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

### Is Cosmox Engine free?

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

### Which has better reviews, KeyLinker or Cosmox Engine?

KeyLinker is rated higher. KeyLinker averages 2.3 out of 5 from 49 ratings, while Cosmox Engine averages 1.0 from 1 ratings.

### Do KeyLinker or Cosmox Engine have ads?

Neither KeyLinker nor Cosmox Engine shows ads.

### Which is updated more often, KeyLinker or Cosmox Engine?

KeyLinker ships an update every 2 months, and Cosmox Engine every 3 weeks. Most recently, KeyLinker was updated on October 7, 2026 and Cosmox Engine on October 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.*