# BM6 vs KA CHARGE

The clearest difference is review sentiment: BM6 at 46% against KA CHARGE's 17%. 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.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on October 21, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | BM6 | KA CHARGE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (18 ratings)](https://appshunter.io/ios/app/bm6/id1561912036/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | **45.8% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | Free | Free |
| Size | 64 MB | 23 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) | [Kickass Products Pvt Ltd](https://appshunter.io/developer/1387751158) |

## 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


### KA CHARGE

[App page](https://appshunter.io/ios/app/ka-charge/id6743463427)

This app provides full control and visibility over your dual battery system. Connect via Bluetooth to configure charging profiles, monitor power input, and view live charge status. Receive real-time alerts for seamless power management on the go.

**Highlights:** Configure charging profiles, Monitor input power, View live charge current, Receive system alerts, Bluetooth connectivity, Real-time data display

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BM6 free?

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

### Is KA CHARGE free?

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

### Do BM6 or KA CHARGE have ads?

Neither BM6 nor KA CHARGE shows ads.

### Which is updated more often, BM6 or KA CHARGE?

BM6 ships an update every 5 weeks, and KA CHARGE every 5 weeks. Most recently, BM6 was updated on October 21, 2026 and KA CHARGE on October 28, 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.*