Amperes 4: Battery Charge Info

Amperes 4: Battery Charge Info

Charging Rate, Test and Alarm

644 ratings
223 reviews
$2.99

Details

  • Released
  • Updated

Features

Amperes 4: Battery Charge Info screenshot #1 for iPhone
Amperes 4: Battery Charge Info screenshot #2 for iPhone
Amperes 4: Battery Charge Info screenshot #3 for iPhone
Amperes 4: Battery Charge Info screenshot #4 for iPhone
Amperes 4: Battery Charge Info screenshot #5 for iPhone
Amperes 4: Battery Charge Info screenshot #6 for iPhone
Amperes 4: Battery Charge Info screenshot #7 for iPhone
Amperes 4: Battery Charge Info screenshot #8 for iPhone
Amperes 4: Battery Charge Info screenshot #9 for iPhone
Amperes 4: Battery Charge Info screenshot #10 for iPhone
iphone
ipad
watch
🖼️Get Icon
Icons↘︎

About

This app helps you understand your device's charging performance. It diagnoses charging issues, compares different charging methods, and monitors battery health with detailed data and alarms. Get insights into your power setup for optimal device longevity.

Battery charging rates (mA and wattage)
Hardware comparison testing
Detailed charging graphs
Global charging speed benchmarking
Intelligent battery alarms
System vital monitoring
Show original description

What users say

See all reviews

What's New in Amperes 4

4.5.3

July 2, 2026

Alarm fixes; tests can now run while the screen is locked.

User reviews

Garbage app

Unless if I am doing something utterly wrong, this app does not measure anything at all. I understand the limitation with iOS not supplying info, and that the app has to use calculations to estimate (I accept this), however every single charger and cables reports the same 9-11W charging range. At the end of the test, some show 21W, some others 10.2 (or something similar, doesn’t matter it seems), but sometimes for the same charger and brick. Not sure how the charger reads 9-11W fluctuating the whole test, than 21W after. All tests are beneath 60% battery charger, well beneath the 80%. You would be better off timing the percentage change manually than trusting this app, since it doesn’t even explain the discrepancies. And yes I got the paid Ampere 4 app. No support forum anywhere online. So if you are looking to sort through your bag of old cables me charges, you’d be better off just calculating how many minutes per percentage increase your battery gets manually. Otherwise this test app is more confusing than helpful.
Show more

not useful

this amp does not do real power, voltage and current monitoring, just does an estimate

Not working if you have IOS 17+ it’s just rubbish!

Takes to long to get the test started and then it takes around 20-25 minutes to complete a test that will show a wrong value.

Learn to Develop an App

Stop selling your poor developments if they can’t work efficiently. It’s not right to be ripping people off. And the app has no real features. I rather deal with the adds than to deal with the lies this app provides.

一如既往的好用

保持住更新,不要落后哦

Developer apps

User experience

🐞

Reported Bugs

4 issues

Charging test results in total nonsense

Bug

Doesn't work on iPad in landscape mode

Bug

Login screen freezes

Bug

Incompatible with older devices

Bug

Requested Features

4 requests

Dark mode option

Feature

Advanced analytics dashboard

Feature

Ability to save charger/wire names

Feature

Ability to monitor charging in the background

Feature

FAQ

What does Amperes 4 do?

Amperes 4 is a diagnostic tool that helps you understand your device's charging performance. It allows you to test your charging setup, identify faulty hardware, and monitor your device's health with detailed data and graphs.

What are the key features of Amperes 4?

Key features include displaying battery charging rates (mA and wattage), comparing wired vs. wireless chargers and cables, visualizing charging sessions with detailed graphs, setting intelligent battery alarms, and monitoring system vitals like thermal status and memory usage.

Is Amperes 4 free to use?

Yes, Amperes 4 is available for free. The provided information indicates it does not have in-app purchases or ads, suggesting a completely free experience.

How can Amperes 4 help me with my charging setup?

Amperes 4 provides the data you need to troubleshoot slow charging issues. You can test different cables, chargers, and power banks to see their actual performance and compare them, helping you identify which components are performing optimally or poorly.

Can I export my charging test results?

Yes, Amperes 4 allows you to export your test results. This feature is useful for external analysis or record-keeping, enabling you to keep track of your charging performance over time or share data if needed.