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Amperes 4: Battery Charge Info

Amperes 4: Battery Charge Info

Battery info, alarm and tests

626 ratings
221 reviews
#127 in paid Utilities
🔧 Utilities
📊 Productivity
$2.99

Details

  • Released
  • Updated
  • July 2, 2017
  • July 2, 2026

Developer

CrioSoft LLC
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Amperes 4: Battery Charge Info video #1 for iPhone
Amperes 4: Battery Charge Info screenshot #2 for iPhone
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Amperes 4: Battery Charge Info screenshot #10 for iPhone
Amperes 4: Battery Charge Info screenshot #11 for iPhone
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❓5 answered
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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

Summarized from real user reviews of Amperes 4. Based on 626 reviews and a 4.4/5 average, it highlights the 11 positives and 40 negatives reviewers mention most about this Utilities app.

Positive things

  • 🚀Uniquely useful
  • 🚀Only way to test charging
  • 👍Probando
  • 👍Used for YEARS
  • 👍Works well despite limited / restricted OS functions
  • 👍Nice app
  • 👍Buena aplicación
  • 👍Awesome!
  • 👍Great app
  • 👍A handy app
  • 👍Great Tool!

Negative things

  • 🐛Does not work on iPhone as advertised
  • 🐛Doesn't give rate of charge
  • 🐛Useless on newer iOS
  • 🐛Slow and useless
  • 🐛Fraudulent App
  • 🐛Omisión de información
  • 🐛Nutzlos (iOS17)
  • 🐛Never does anything
  • 🐛Warnings are too late
  • 🐛Not as described.
  • 🐛Something is wrong
  • 🐛Doesn't work anymore
  • 🐛Doesn't work with IOS 17
  • 🐛Seit IOS 17 falsche Messwerte
  • 🐛Close to useless
  • 🐛Alarm not reliable
  • 🐛Does not work
  • 🐛Takes 10 minutes to measure the actual charging speed
  • 🐛No longer works
  • 🐛Не открывается после обновления... :(
  • 🐛Ne fonctionne pas
  • 🐛App crashed after 2 days
  • 🐛Not accurate at all!
  • 🐛Asking for refund showing 100W charge
  • 🐛Не проходит тест зарядок
  • 🐛Funktioniert einfach nicht
  • 🐛Pure garbage app
  • 🐛Schlecht
  • 🐛Absolute rubbish
  • 🐛A piece of garbage!!!
  • 🐛Doesn't do what it's meant to
  • 🐛Amps????
  • 🐛Не работает
  • 🐛iphone x simply not working
  • 🐛Use your watch to time how long it takes to increase charge by 1% and you have all the app does
  • 🐛Well that was $1.39 wasted!
  • 🐛Messwerte nicht reproduzierbar
  • 🐛I give up
  • 🐛Wrong !
  • 🐛Applicazione NON consigliata.
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.

Charts

Top Paid

📉 127-5

Utilities

This app dropped -5 positions in Utilities chart.

Last updated on July 19, 2026.

User reviews

Most RecentHighest RatedLowest Rated

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.
adqikaadqika

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.
EmRah_AnubisEmRah_Anubis

一如既往的好用

保持住更新，不要落后哦
是小七哥哥啊是小七哥哥啊

Fake test data?

I doubt the test data. Even after changing the cable and testing under different conditions, I still got almost the same results. This is surprising because I know the performance of the faulty cable was not good.
Josiah1006Josiah1006

Response from developer

Hello. Did you go all the way with the test, or judged by the preliminary result, visible immediately? You will have to let system to test it for 15-30 minutes per test to see correct data. Regards, Andre

Excellent

Excellent
Sting999Sting999
See 216 more reviews

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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.