# HK Battery vs Battery Testing Master

The clearest difference is in-app purchases: HK Battery at none against Battery Testing Master's 1. HK Battery also leads on ads (none vs shown) and review sentiment (25% vs 0%). Battery Testing Master's advantage is update cadence (every 5 days vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Battery Testing Master sells 1 one-off in-app purchase. HK Battery asks for nothing beyond the download.

HK Battery ships an update every 2 months, Battery Testing Master every 5 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | HK Battery | Battery Testing Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (28 ratings)](https://appshunter.io/ios/app/battery-testing-master/id6502358441/reviews)** |
| Number of ratings | — | **28** |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 13 MB | 40 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hardkorr](https://appshunter.io/developer/1637354677) | [Nguyen Ngoc Long](https://appshunter.io/developer/1652022123) |

## What reviewers say

### HK Battery

[App page](https://appshunter.io/ios/app/hk-battery/id1585479257)

Monitor your Hardkorr Bluetooth-enabled deep cycle batteries with this free utility app. View real-time data like state of charge, voltage, current draw, and temperature. It also provides detailed warnings and error information for supported battery models.

**Highlights:** Real-time battery voltage, State of charge monitoring, Live current draw, Temperature readings, Warnings and error alerts, Charge cycle tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### Battery Testing Master

[App page](https://appshunter.io/ios/app/battery-testing-master/id6502358441)

This application benchmarks the battery performance of mobile devices. It provides a comprehensive test for battery health, suitable for both new and used batteries on iOS devices.

**Highlights:** Battery benchmarking, Battery health testing, Mobile device optimization, iOS battery analysis

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


## Frequently asked questions

### Is HK Battery free?

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

### Is Battery Testing Master free?

Battery Testing Master is free to download, with in-app purchases available.

### Do HK Battery or Battery Testing Master have ads?

Battery Testing Master shows ads; HK Battery does not.

### Which is updated more often, HK Battery or Battery Testing Master?

HK Battery ships an update every 2 months, and Battery Testing Master every 5 days. Most recently, HK Battery was updated on October 24, 2026 and Battery Testing Master on October 24, 2026.

---

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