# KG Serials vs Pro BMS

The clearest difference is rating: KG Serials at 3.4 against Pro BMS's 1.0. KG Serials also leads on ratings volume (7 vs 1) and iOS requirement (9.0 vs 15.6). On price, update cadence, ads and in-app purchases 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, 3.4 against 1.0. That said, the two scores are not equally well evidenced: KG Serials has 7 ratings behind it against 1, so its average is the more settled of the two.

KG Serials ships an update monthly, Pro BMS every 2 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | KG Serials | Pro BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (7 ratings)](https://appshunter.io/ios/app/kg-serials/id1556594835/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/pro-bms/id6474855560/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 30 MB | 35 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| 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


### Pro BMS

[App page](https://appshunter.io/ios/app/pro-bms/id6474855560)

This utility app measures and displays real-time battery parameters like voltage, current, and capacity. It offers customizable protection functions and allows for voltage/current curve export. Control and monitoring are available via a mobile app.

**Highlights:** Real-time voltage and current measurement, Power, charge, and discharge capacity monitoring, Customizable protection functions (overvoltage, overcurrent, etc.), Color LCD display of comprehensive data, Voltage and current curve display and export, Mobile app control and communication

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KG Serials free?

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

### Is Pro BMS free?

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

### Which has better reviews, KG Serials or Pro BMS?

KG Serials is rated higher. KG Serials averages 3.4 out of 5 from 7 ratings, while Pro BMS averages 1.0 from 1 ratings.

### Do KG Serials or Pro BMS have ads?

Neither KG Serials nor Pro BMS shows ads.

### Which is updated more often, KG Serials or Pro BMS?

KG Serials ships an update monthly, and Pro BMS every 2 months. Most recently, KG Serials was updated on October 7, 2026 and Pro BMS on October 13, 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.*