# Amperes 4: Battery Charge Info — Charging Rate, Test and Alarm

> Diagnose charging issues, monitor battery health, and test hardware with detailed data. (iPhone/iPad app by CrioSoft LLC.)

- Source: https://appshunter.io/ios/app/amperes-4-battery-charge-info/id1245475416 (this page in markdown: same URL + `.md`)
- Developer: [CrioSoft LLC](https://appshunter.io/developer/1245475415)
- Category: Utilities, Productivity
- Price: $2.99
- Rating: 4.40/5 from 644 App Store ratings · 223 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 36 MB
- Languages: American English, Afrikaans, Arabic, Armenian, Catalan, Croatian, Czech, Danish, Dutch, Finnish and 27 more
- Released: 2017-07-02
- Data updated: 2026-08-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/amperes-4-battery-charge-info/id1245475416/reviews.md

## What is Amperes 4?

Take Control of Your Power with Amperes 4
Stop guessing why your phone is charging slowly. Amperes 4 is the ultimate diagnostic tool designed to help you test your charging setup, identify faulty hardware, and monitor your device's health with professional-grade precision.

Key Features
Battery Charging Rates: Get the mA and wattage data to see exactly how much juice is flowing into your battery.

Hardware Comparisons: Side-by-side testing for wired vs. wireless chargers, power banks, and different cable types.

Deep Data & Graphs: Visualize your charging sessions with detailed, interactive graphs that track performance over time.

Global Benchmarking: Compare your charging speeds with other users online to see if your gear is performing at its peak.

Intelligent Battery Alarm: Get notified the moment your battery reaches your desired level to help prolong its lifespan.

System Vital Monitoring: Track thermal status, memory usage, and disk space alongside your battery metrics.

Professional Testing Tools
Customized Logging: Add notes about wire brands or charger models to your tests for future reference.

Color-Coded Results: Intuitive UI instantly shows you if a charger is "Good," "Average," or "Bad."

Exportable Data: Need the raw numbers? Export your test results for external analysis or record-keeping.

Why Amperes 4?
Whether you are testing a brand-new GaN charger, verifying a "fast-charging" cable, or troubleshooting a power bank, Amperes 4 gives you the transparency you need to keep your devices running efficiently.

Stop wasting time with bad cables. Get the data. Get Amperes 4.

## Key features

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

## Chart rankings

- #73 in Top Paid · Utilities (US App Store)

## What do users think of Amperes 4?

Overall sentiment: negative

**Pros**

- 🚀 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!

**Cons**

- 🐛 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.

**Commonly reported bugs**

- Charging test results in total nonsense
- Doesn't work on iPad in landscape mode
- Login screen freezes
- Incompatible with older devices

**Most requested features**

- Dark mode option
- Advanced analytics dashboard
- Ability to save charger/wire names
- Ability to monitor charging in the background

## Recent user reviews (10 of 223)

All indexed reviews: https://appshunter.io/ios/app/amperes-4-battery-charge-info/id1245475416/reviews.md

### 1/5 — Garbage app

*2026-07-28, version 4.5.3*

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.

### 1/5 — not useful

*2026-07-18, version 4.5.3*

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

### 1/5 — Not working if you have IOS 17+ it’s just rubbish!

*2026-07-07, version 4.5.3*

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.

### 1/5 — Learn to Develop an App

*2026-06-21, version 4.5.2*

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.

### 5/5 — 一如既往的好用

*2026-06-09*

保持住更新，不要落后哦

### 2/5 — Fake test data?

*2026-06-01*

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.

**Developer response:** 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

### 5/5 — Excellent

*2026-05-03, version 4.5.2*

Excellent

### 1/5 — This Application doesn’t work well

*2026-04-12, version 4.5.2*

This Application doesn’t work well, it shows me the same 10-12W charging when I charge by regular 2A charger and by fast charger 40W. It doesn’t its money.

### 1/5 — Schaut nett aus….

*2026-03-28*

…. das wars dann auch. QI2.2 kennt der wohl nicht. Komme nicht mal auf 10Watt.
Genutzte Geräte:
IPhone17Pro

Belkin UltraCharge Pro Qi2.2 Induktive Ladestation

UGREEN Nexode 100W USB C Ladegerät mit 4X USB-C

Anker Prime 200W USB C Ladegerät

Antwort auf die Antwort:

So ein Quatsch, Das 17er lädt locker in der Hälfte der Zeit auf als mein Firmen 15er.

Alleine für diese Antwort/Ausrede würde ich den einen Stern auch noch wegnehmen!!

**Developer response:** Vielen Dank für Ihr Feedback. Diese App basiert auf den Daten, die das Apple-Batteriesystem liefert – in diesem Fall also darauf, wie viel Strom Ihre Ladegeräte der Batterie tatsächlich zuführen konnten. Sie können zwar leistungsstarke und teure Ladegeräte verwenden, aber die Apple-Hardware begrenzt die eingehende Energie gemäß ihrer eigenen Algorithmen, um den Akku nicht zu beschädigen.

Ich sehe es so: Unsere 2-Euro-App hat für Sie gerade herausgefunden, dass Sie kein Vermögen für extrem leistungsstarke Ladegeräte ausgeben müssen, wenn Sie ausschließlich Ihr iPhone laden möchten, da das Gerät die Stromzufuhr auf Hardware-Ebene auf sichere Werte drosselt.

Falls Sie dies weiter besprechen möchten, können Sie uns gerne eine E-Mail an support@criosoft.com schreiben. Wir finden jedoch, dass wir eigentlich ein paar Sterne mehr verdient hätten :)

Beste Grüße,
Andre

### 1/5 — Why sell it if it doesn’t work for iOS 26?

*2026-03-21, version 4.5.1*

So you download the app, it’s positioned on the store as being compatible with the current operating system, you agree to purchase the app, and the first thing you’re greeted with is “yeah so it stopped working with iOS 16, got worse with 26, and barely works now, thanks for your money”. 

It’s extremely difficult to get a reading on a Qi2 charger.  Good luck with a Qi1 charger.  No way.  It took 1 hr and 12 minutes on my Qi2 charger.

## Frequently asked questions about Amperes 4

### 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.

## Version history (last 5 releases)

### 4.5.3 — 2026-07-02

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

### 4.5.2 — 2026-03-24

Additional info added. fixes. Apple iWatch app added.

### 4.5.1 — 2026-03-21

Small fixes, stability improvements.

### 4.5.0 — 2026-03-11

Total Transformation: Meet the all-new Amperes 4.5. Featuring a redesigned UI, enhanced testing precision, and a new online comparison engine. Stop guessing and start measuring with better data and more insights!

### 4.0.23 — 2024-09-30

Support for iOS18 added

## Apps similar to Amperes 4

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Amperes Battery Charging Lite](https://appshunter.io/ios/app/amperes-battery-charging-lite/id1253789580) | 4.2 (555) | Free | Utilities |
| [Battery Health - Charge Alarm](https://appshunter.io/ios/app/battery-health-charge-alarm/id1557004936) | 4.4 (552) | Free | Utilities |
| [Ampere Battery Charging Check](https://appshunter.io/ios/app/ampere-battery-charging-check/id1317191964) | 3.7 (406) | Free | Utilities |
| [Battery Charge Alarm](https://appshunter.io/ios/app/battery-charge-alarm/id1482503198) | 4.6 (2,924) | Free | Utilities |
| [Battery HD+](https://appshunter.io/ios/app/battery-hd-plus/id331453283) | 4.5 (2,716) | Free | Utilities |
| [Battery Life - check runtimes](https://appshunter.io/ios/app/battery-life-check-runtimes/id1080930585) | 4.6 (33,634) | Free | Utilities |

## More apps by CrioSoft LLC

- [Amperes Battery Charging Lite](https://appshunter.io/ios/app/amperes-battery-charging-lite/id1253789580)
- [MEDS: Pill & Injection Tracker](https://appshunter.io/ios/app/meds-pill-and-injection-tracker/id1297105025)
- [Ampere Battery Charging Check](https://appshunter.io/ios/app/ampere-battery-charging-check/id1317191964)
- [Match Sounds: Audio Puzzle](https://appshunter.io/ios/app/match-sounds-audio-puzzle/id1384334794)
- [Location notes for Fallout](https://appshunter.io/ios/app/location-notes-for-fallout/id1444697294)

All apps by CrioSoft LLC: https://appshunter.io/developer/1245475415

## Related topics

[info battery](https://appshunter.io/ios/topics/info-battery) · [info charging](https://appshunter.io/ios/topics/info-charging) · [amperes 4](https://appshunter.io/ios/topics/amperes-4) · [battery test charging](https://appshunter.io/ios/topics/battery-test-charging) · [charger test battery](https://appshunter.io/ios/topics/charger-test-battery) · [charger test wireless](https://appshunter.io/ios/topics/charger-test-wireless) · [battery test device](https://appshunter.io/ios/topics/battery-test-device) · [ampere battery](https://appshunter.io/ios/topics/ampere-battery) · [ampere test](https://appshunter.io/ios/topics/ampere-test) · [battery test charge](https://appshunter.io/ios/topics/battery-test-charge) · [charging speed testing](https://appshunter.io/ios/topics/charging-speed-testing) · [amperes battery charging lite](https://appshunter.io/ios/topics/amperes-battery-charging-lite) · [fast battery charger](https://appshunter.io/ios/topics/fast-battery-charger) · [amp battery](https://appshunter.io/ios/topics/amp-battery) · [battery charge speed](https://appshunter.io/ios/topics/battery-charge-speed) · [battery materials toolkit](https://appshunter.io/ios/topics/battery-materials-toolkit)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*