# BM6 vs PowerMon X

The clearest difference is rating: PowerMon X at 4.0 against BM6's 3.3. PowerMon X also leads on review sentiment (67% vs 46%). BM6's advantage is ratings volume (18 vs 5). 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.

PowerMon X holds the better App Store score, 4.0 against 3.3. Both are backed by a comparable volume of ratings — 18 and 5 respectively. Written reviews point the same way: 46% of BM6's written reviews are positive against 67% of PowerMon X's.

BM6 ships an update every 5 weeks, PowerMon X every 3 weeks. The most recent releases landed on October 21, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | BM6 | PowerMon X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (18 ratings)](https://appshunter.io/ios/app/bm6/id1561912036/reviews) | **[4.0 (5 ratings)](https://appshunter.io/ios/app/powermon-x/id1594717448/reviews)** |
| Number of ratings | **18** | 5 |
| Positive reviews | 45.8% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 64 MB | 10 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [Thornwave Labs Inc](https://appshunter.io/developer/1289006248) |

## 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


### PowerMon X

[App page](https://appshunter.io/ios/app/powermon-x/id1594717448)

Monitor battery levels and performance of compatible devices via Bluetooth. View redesigned log data charts and access improved screens. Requires a physical PowerMon device.

**Highlights:** Redesigned log data charts, Improved screens, Compatibility with newest devices, Compatibility with new firmware, Bluetooth monitoring, Requires physical device

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BM6 free?

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

### Is PowerMon X free?

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

### Which has better reviews, BM6 or PowerMon X?

PowerMon X is rated higher. BM6 averages 3.3 out of 5 from 18 ratings, while PowerMon X averages 4.0 from 5 ratings.

### Do BM6 or PowerMon X have ads?

Neither BM6 nor PowerMon X shows ads.

### Which is updated more often, BM6 or PowerMon X?

BM6 ships an update every 5 weeks, and PowerMon X every 3 weeks. Most recently, BM6 was updated on October 21, 2026 and PowerMon X on September 29, 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.*