# BM6 vs Battery Asst

The clearest difference is rating: Battery Asst at 4.0 against BM6's 3.3. Battery Asst also leads on iOS requirement (9.0 vs 15.6). BM6's advantage is review sentiment (46% vs 20%). 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.

Battery Asst holds the better App Store score, 4.0 against 3.3. Both are backed by a comparable volume of ratings — 18 and 8 respectively. Written reviews complicate that: 46% of BM6's written reviews are positive against 20% of Battery Asst's, so the app with the better star average is not the one people write more warmly about.

BM6 ships an update every 5 weeks, Battery Asst monthly. The most recent releases landed on October 21, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | BM6 | Battery Asst |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (18 ratings)](https://appshunter.io/ios/app/bm6/id1561912036/reviews) | **[4.0 (8 ratings)](https://appshunter.io/ios/app/battery-asst/id1601588941/reviews)** |
| Number of ratings | **18** | 8 |
| Positive reviews | **45.8% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 64 MB | 23 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [婷 赵](https://appshunter.io/developer/1455495649) |

## What reviewers say

### 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


### Battery Asst

[App page](https://appshunter.io/ios/app/battery-asst/id1601588941)

Monitor your car battery's voltage in real time. This practical app displays the starting and charging system voltages, providing a comprehensive understanding of your car battery's condition directly on your mobile device via Bluetooth.

**Highlights:** Real-time car battery voltage display, Monitor starting system voltage, Monitor charging system voltage, Bluetooth data transmission, All-round battery condition understanding

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BM6 free?

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

### Is Battery Asst free?

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

### Which has better reviews, BM6 or Battery Asst?

Battery Asst is rated higher. BM6 averages 3.3 out of 5 from 18 ratings, while Battery Asst averages 4.0 from 8 ratings.

### Do BM6 or Battery Asst have ads?

Neither BM6 nor Battery Asst shows ads.

### Which is updated more often, BM6 or Battery Asst?

BM6 ships an update every 5 weeks, and Battery Asst monthly. Most recently, BM6 was updated on October 21, 2026 and Battery Asst on October 30, 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.*