# KG Serials vs BM6

The clearest difference is review sentiment: BM6 at 46% against KG Serials's 0%. KG Serials's advantage is rating (3.6 vs 3.3) and iOS requirement (9.0 vs 15.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KG Serials holds the better App Store score, 3.6 against 3.3. Both are backed by a comparable volume of ratings — 8 and 18 respectively. Written reviews complicate that: 0% of KG Serials's written reviews are positive against 46% of BM6's, so the app with the better star average is not the one people write more warmly about.

KG Serials ships an update monthly, BM6 every 5 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | KG Serials | BM6 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (8 ratings)](https://appshunter.io/ios/app/kg-serials/id1556594835/reviews)** | [3.3 (18 ratings)](https://appshunter.io/ios/app/bm6/id1561912036/reviews) |
| Number of ratings | 8 | **18** |
| Positive reviews | 0.0% of reviews | **45.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 30 MB | 64 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Junce Instruments Co., Ltd.](https://appshunter.io/developer/1535583983) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## What reviewers say

### KG Serials

[App page](https://appshunter.io/ios/app/kg-serials/id1556594835)

This utility measures electrical parameters like voltage, current, and power. It offers multiple protection functions and real-time battery monitoring on a color LCD. The app also supports data export and remote control via mobile or PC.

**Highlights:** Measures voltage, current, power, capacity, Multiple protection functions (over/under voltage, over current), Real-time battery monitoring, Color LCD display, Voltage and current curve display, Mobile app and PC control, Firmware updates

**Features:** macOS Compatibility

**In-app purchases:** none


### BM6

[App page](https://appshunter.io/ios/app/bm6/id1561912036)

Monitor your car's battery in real-time via Bluetooth. This app tests starting and charging systems, records engine start/stop times, and displays all data on your mobile device for easy management of your vehicle's battery power.

**Highlights:** Real-time battery voltage monitoring, Starting system voltage test, Charging system voltage test, Records engine start/stop times, Bluetooth data display, Vehicle battery power management

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is KG Serials free?

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

### Is BM6 free?

BM6 is free to download, with no in-app purchases.

### Which has better reviews, KG Serials or BM6?

KG Serials is rated higher. KG Serials averages 3.6 out of 5 from 8 ratings, while BM6 averages 3.3 from 18 ratings.

### Do KG Serials or BM6 have ads?

Neither KG Serials nor BM6 shows ads.

### Which is updated more often, KG Serials or BM6?

KG Serials ships an update monthly, and BM6 every 5 weeks. Most recently, KG Serials was updated on October 24, 2026 and BM6 on October 21, 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.*