# 123SmartBMS vs BM6

The clearest difference is rating: 123SmartBMS at 4.5 against BM6's 3.2. 123SmartBMS also leads on review sentiment (67% vs 46%). 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.

123SmartBMS holds the better App Store score, 4.5 against 3.2. Both are backed by a comparable volume of ratings — 21 and 17 respectively. Written reviews point the same way: 67% of 123SmartBMS's written reviews are positive against 46% of BM6's.

123SmartBMS ships an update monthly, BM6 every 5 weeks. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 123SmartBMS | BM6 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (21 ratings)](https://appshunter.io/ios/app/123smartbms/id988285264/reviews)** | [3.2 (17 ratings)](https://appshunter.io/ios/app/bm6/id1561912036/reviews) |
| Number of ratings | **21** | 17 |
| Positive reviews | **66.7% of reviews** | 45.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 190 MB | 64 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Albertronic B.V.](https://appshunter.io/developer/890882604) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## What reviewers say

### 123SmartBMS

[App page](https://appshunter.io/ios/app/123smartbms/id988285264)

This app monitors and manages lithium battery packs, ensuring optimal condition and extended lifespan. It tracks cell voltages, temperatures, and currents, while balancing cells during charging. Connect via Bluetooth to view real-time battery status and control charging/discharging.

**Highlights:** Monitors cell voltages and temperatures, Tracks in- and outgoing currents, Balances cells during charging, Bluetooth connectivity for real-time data, Controls charge/discharge signals, Extends battery pack lifespan

**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 123SmartBMS free?

123SmartBMS 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, 123SmartBMS or BM6?

123SmartBMS is rated higher. 123SmartBMS averages 4.5 out of 5 from 21 ratings, while BM6 averages 3.2 from 17 ratings.

### Do 123SmartBMS or BM6 have ads?

Neither 123SmartBMS nor BM6 shows ads.

### Which is updated more often, 123SmartBMS or BM6?

123SmartBMS ships an update monthly, and BM6 every 5 weeks. Most recently, 123SmartBMS was updated on September 20, 2026 and BM6 on September 22, 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.*