# KeyLinker vs Ah Charge! Controller Battery

The clearest difference is rating: Ah Charge! Controller Battery at 5.0 against KeyLinker's 2.3. Ah Charge! Controller Battery also leads on update cadence (fortnightly vs every 2 months). KeyLinker's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Ah Charge! Controller Battery sells 3 in-app purchases, starting at $0.99 per 7 days. KeyLinker asks for nothing beyond the download.

Ah Charge! Controller Battery holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: KeyLinker has 52 ratings behind it against 2, so its average is the more settled of the two.

KeyLinker ships an update every 2 months, Ah Charge! Controller Battery fortnightly. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | KeyLinker | Ah Charge! Controller Battery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (52 ratings)](https://appshunter.io/ios/app/keylinker/id1472490585/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ah-charge-controller-battery/id6450749898/reviews)** |
| Number of ratings | **52** | 2 |
| Positive reviews | 30.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 38 MB | 5 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ShenZhen ZhiXu Technology Co., Ltd](https://appshunter.io/developer/1472490584) | [DY Solution](https://appshunter.io/developer/1689765727) |

## 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


### Ah Charge! Controller Battery

[App page](https://appshunter.io/ios/app/ah-charge-controller-battery/id6450749898)

Monitor your controller's battery level to avoid mid-game shutdowns. Get timely alerts and view battery percentage directly within the app or via widgets. Offers a Pro version for advanced features like push notifications and ad-free experience.

**Highlights:** Controller battery percentage display, Button input tester, Home Screen widget, Lock Screen widget, Low battery alerts, Live Activity on Lock Screen/Dynamic Island

**Features:** Game Controller support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 아차 충전 ! 프리미엄 스탠다드 | $0.99 | per 7 days |
| 아차 충전 ! 프리미엄 스탠다드 | $2.99 | per month |
| 아차 충전 ! 프리미엄 스탠다드 | $29.99 | per year |


## Frequently asked questions

### Is KeyLinker free?

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

### Is Ah Charge! Controller Battery free?

Ah Charge! Controller Battery is free to download, with in-app purchases available.

### Which has better reviews, KeyLinker or Ah Charge! Controller Battery?

Ah Charge! Controller Battery is rated higher. KeyLinker averages 2.3 out of 5 from 52 ratings, while Ah Charge! Controller Battery averages 5.0 from 2 ratings.

### Do KeyLinker or Ah Charge! Controller Battery have ads?

Ah Charge! Controller Battery shows ads; KeyLinker does not.

### Which is updated more often, KeyLinker or Ah Charge! Controller Battery?

KeyLinker ships an update every 2 months, and Ah Charge! Controller Battery fortnightly. Most recently, KeyLinker was updated on October 26, 2026 and Ah Charge! Controller Battery on October 30, 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.*