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Amperes 4: Battery Charge Info

Amperes 4: Battery Charge Info

Charging Rate, Test and Alarm

650 ratings
229 reviews
#73 in paid Utilities
🔧 Utilities
📊 Productivity
$2.99

Details

Released
July 2, 2017
Updated
July 2, 2026

Features

Developer

CrioSoft LLC
✨Promote your app ✨
Amperes 4: Battery Charge Info screenshot #1 for iPhone
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Amperes 4: Battery Charge Info screenshot #10 for iPhone
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⭐229
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🔄6+ apps
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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 about Amperes 4

Reviews of Amperes 4 are mostly negative: the Utilities app is rated 4.4/5 from 650 App Store ratings. What users like most: uniquely useful, only way to test charging. Top complaints: does not work on iPhone as advertised, doesn't give rate of charge. Summarized from real user reviews.

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

📉 73-3

Utilities

This app dropped -3 positions in Utilities chart.

Last updated on October 26, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Waste of money

JB
JJB-ZEUS

Trash

Maybe this can be useful if you really want to do some deep evaluation or something… I just wanted to quickly see the charging rate between different chargers. This app is so slow, and requires so much time it’s functionally useless I’ve been messing with it for 15 or so minutes and still have no data. It erroneously shows a charging rate of 8-9watts while it is “reading” which is just utterly invalid and a means to keep the user engaged. Useless trash app. Hate that I just spent three bucks on this garbage.

Good job, buddy. You won three bucks from me.
Show more
GGreznyk00732

Data

I love the data. Would like to see an interactive face when not charging.
KKelkelkelly

👌

👌
MAMLk03QL A2628

Looks good, but want something simpler

Too complex for me. All I want is something that will show how many milliamps of current my phone is drawing in real time regardless of the total charge level.
PPV1900
See 224 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.