Comparison

KeyLinker vs Cosmox Engine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

KeyLinker

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
Read full description

This app is used by handles that support keylinker protocol, which can be set to modify the parameters of more than ten functions of the handle, such as keys, lamplight, vibrations, joystick and trigger. Users can modify the parameters of the handle according to their habits. The flexible parameter settings greatly enhance the handle experience.The handle can be connected to this app and other equipment at the same time, and can be used at the same time

About

Cosmox Engine

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
Read full description

The X-engine app is designed to assist players in better controlling and adjusting their gaming controllers, enhancing the actual gaming experience. This app supports the following features: 1、Rapid Fire/Mapping/Macro Functions: Customize the M1~M4 back buttons on the controller for rapid firing, button mapping, and macro programming, enabling quicker and more precise operations to meet your personalized gaming needs. 2、Vibration/Joystick/Trigger Adjustment: Quickly set parameters such as joystick sensitivity, vibration intensity, and trigger button travel for the controller. This allows players to better feel the game environment and characters, enhancing the overall sense of presence and immersion in the game. 3、User-Friendly Interface: The app features a clean and visually appealing UI, making it simple, intuitive, and easy to navigate. 4、Multi-Language Support: Added support for multiple languages, helping us provide more convenient, practical, and satisfactory services to global users.

Screenshots

KeyLinker4 screens
Cosmox Engine4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
KeyLinker versus Cosmox Engine: the parameters behind the verdict, then further details
ParameterKeyLinkerCosmox Engine
PriceFreeFree
Rating2.3 (49 ratings) — better1.0 (1 ratings)
Positive reviews30.2% of reviews—
Number of ratings49 — better1
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.09.0 — better
Further details — not scored
Size38 MB32 MB
Age rating4+4+
DeveloperShenZhen ZhiXu Technology Co., LtdCosmox Technology(Shenzhen) Co.,Ltd.

Customer experience

KeyLinker

All ratings49 ratings
Positive32.7%
Neutral2.0%
Negative65.3%
Written reviews129 reviews
Positive30.2%
Neutral6.2%
Negative63.6%

Cosmox Engine

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

KeyLinker

No in-app purchases

None

Cosmox Engine

No in-app purchases

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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