# Amperes 4 vs Core Timer

The clearest difference is price: Core Timer at Free against Amperes 4's $2.99. Core Timer also leads on update cadence (every 6 days vs every 2 months). Amperes 4's advantage is chart position (#53 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Core Timer 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, Core Timer every 6 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Amperes 4 | Core Timer |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.4 (651 ratings)](https://appshunter.io/ios/app/amperes-4-battery-charge-info/id1245475416/reviews)** | — |
| Number of ratings | **651** | — |
| Positive reviews | 46.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free | — |
| Best chart rank | **#53** | — |
| Size | 36 MB | 12 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CrioSoft LLC](https://appshunter.io/developer/1245475415) | [James Mowat](https://appshunter.io/developer/1839159413) |

## What reviewers say

### Amperes 4

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

**Currently charting:** #53 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


### Core Timer

[App page](https://appshunter.io/ios/app/core-timer/id6752376369)

**In-app purchases:** none


## Frequently asked questions

### Is Amperes 4 free?

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

### Is Core Timer free?

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

### Do Amperes 4 or Core Timer have ads?

Neither Amperes 4 nor Core Timer shows ads.

### Which is updated more often, Amperes 4 or Core Timer?

Amperes 4 ships an update every 2 months, and Core Timer every 6 days. Most recently, Amperes 4 was updated on October 29, 2026 and Core Timer on October 24, 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.*