# Ultimate9 BM vs BM6

The clearest difference is rating: Ultimate9 BM at 5.0 against BM6's 3.2. Ultimate9 BM also leads on review sentiment (57% vs 46%) and iOS requirement (10.0 vs 15.6). BM6's advantage is ratings volume (17 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Ultimate9 BM holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: BM6 has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 57% of Ultimate9 BM's written reviews are positive against 46% of BM6's.

## The numbers

| Metric | Ultimate9 BM | BM6 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ultimate9-bm/id1525506062/reviews)** | [3.2 (17 ratings)](https://appshunter.io/ios/app/bm6/id1561912036/reviews) |
| Number of ratings | 3 | **17** |
| Positive reviews | **57.1% of reviews** | 45.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 5 weeks |
| Monetization | Free | Free |
| Size | 26 MB | 64 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [俊华 邹](https://appshunter.io/developer/1276442287) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## What reviewers say

### Ultimate9 BM

[App page](https://appshunter.io/ios/app/ultimate9-bm/id1525506062)

Monitor your car battery's real-time voltage and test its cranking and charging systems. View all battery data directly on your mobile device via Bluetooth connection.

**Highlights:** Real-time battery voltage monitoring, Cranking system testing, Charging system testing, Bluetooth data transfer, View data on mobile device

**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 Ultimate9 BM free?

Ultimate9 BM 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, Ultimate9 BM or BM6?

Ultimate9 BM is rated higher. Ultimate9 BM averages 5.0 out of 5 from 3 ratings, while BM6 averages 3.2 from 17 ratings.

### Do Ultimate9 BM or BM6 have ads?

Neither Ultimate9 BM nor BM6 shows ads.

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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.*