Comparison

KeyLinker vs Ah Charge! Controller Battery

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

Ah Charge! Controller Battery

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
Read full description

Ever had your controller die mid-game? Ah Charge! shows your controller's battery level so you can charge it before it's too late. [Free] ◼ See your controller's battery % inside the app ◼ Button input tester ◼ Home Screen widget ◼ Lock Screen widget ◼ Connection guide screen [Pro] (subscription, or watch an ad for 3 hours of access) ◼ Get an alert when the battery drops below your threshold (20% by default), even while you use other apps ◼ Live Activity on the Lock Screen and Dynamic Island (iOS 16.1+) ◼ No ads Officially supported controller: Sony DualSense. Other controllers that report battery information may also work, but support is not guaranteed. Auto-renewable subscription Payment will be charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions in your App Store account settings after purchase. Plans: weekly, monthly, yearly ◼ Privacy Policy: https://dy-solution.kr/privacy.html#acha-charge ◼ Terms of Use: https://dy-solution.kr/terms.html

Screenshots

KeyLinker4 screens
Ah Charge! Controller Battery4 screens

Verdict

The call

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.

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 3 level
KeyLinker versus Ah Charge! Controller Battery: the parameters behind the verdict, then further details
ParameterKeyLinkerAh Charge! Controller Battery
PriceFreeFree
Rating2.3 (52 ratings)5.0 (2 ratings) — better
Positive reviews30.2% of reviews—
Number of ratings52 — better2
Update frequencyEvery 2 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size38 MB5 MB
Age rating4+4+
DeveloperShenZhen ZhiXu Technology Co., LtdDY Solution

Customer experience

KeyLinker

All ratings52 ratings
Positive32.7%
Neutral1.9%
Negative65.4%
Written reviews129 reviews
Positive30.2%
Neutral6.2%
Negative63.6%

Ah Charge! Controller Battery

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

KeyLinker

No in-app purchases

3 purchases

Ah Charge! Controller Battery

Subscriptions3
  • 아차 충전 ! 프리미엄 스탠다드$0.997 Days
  • 아차 충전 ! 프리미엄 스탠다드$2.991 Month
  • 아차 충전 ! 프리미엄 스탠다드$29.991 Year

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.

Other comparisons