# Amperes 4 vs Evmetry

The clearest difference is price: Evmetry at Free against Amperes 4's $2.99. Evmetry also leads on iOS requirement (15.1 vs 17.0). Amperes 4's advantage is chart position (#139 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

Evmetry is free to download; Amperes 4 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Amperes 4 ships an update every 2 months, Evmetry every 3 months. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Amperes 4 | Evmetry |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.4 (652 ratings)](https://appshunter.io/ios/app/amperes-4-battery-charge-info/id1245475416/reviews)** | — |
| Number of ratings | **652** | — |
| Positive reviews | 46.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Best chart rank | **#139** | — |
| Size | 36 MB | 30 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CrioSoft LLC](https://appshunter.io/developer/1245475415) | [ABDULLAH UGRASKAN](https://appshunter.io/developer/1895106696) |

## What reviewers say

### Amperes 4

[App page](https://appshunter.io/ios/app/amperes-4-battery-charge-info/id1245475416)

**Currently charting:** #139 Top Paid · Utilities (US App Store)

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.

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

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Uniquely useful
- 🚀 Only way to test charging
- 👍 Probando
- 👍 Used for YEARS
- 👍 Works well despite limited / restricted OS functions

**What reviewers complain about**

- 🐛 Does not work on iPhone as advertised
- 🐛 Doesn't give rate of charge
- 🐛 Useless on newer iOS
- 🐛 Slow and useless
- 🐛 Fraudulent App

**Reported bugs**

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

**Requested features**

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


### Evmetry

[App page](https://appshunter.io/ios/app/evmetry/id6764392201)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Amperes 4 free?

Amperes 4 costs $2.99, with no in-app purchases.

### Is Evmetry free?

Evmetry is free to download, with no in-app purchases.

### Do Amperes 4 or Evmetry have ads?

Neither Amperes 4 nor Evmetry shows ads.

### Which is updated more often, Amperes 4 or Evmetry?

Amperes 4 ships an update every 2 months, and Evmetry every 3 months. Most recently, Amperes 4 was updated on November 1, 2026 and Evmetry on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*