KG Serials vs BM6
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KG Serials
This utility measures electrical parameters like voltage, current, and power. It offers multiple protection functions and real-time battery monitoring on a color LCD. The app also supports data export and remote control via mobile or PC.
- Measures voltage, current, power, capacity
- Multiple protection functions (over/under voltage, over current)
- Real-time battery monitoring
- Color LCD display
- Voltage and current curve display
- Mobile app and PC control
- Firmware updates
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The VAG series volt-ampere meter is a new type of coulomb counter that can measure various physical parameters such as voltage, current, power, charge and discharge capacity, watt-hours, time, etc. It can also set parameters to realize multiple protection functions such as over voltage protection, under voltage protection, over current protection, overpower protection, over temperature protection and time limit protection.The meter can automatically identify the direction of the current, and can monitor the battery capacity in real time and display the measured data in use color LCD screen. The VAG series voltage and current meters add voltage and current curve display and export functions on the basis of the original functions. At the same time, the mobile phone APP and host computer can be used to control, and the firmware can also be updated and upgraded in real time.
BM6
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.
- 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
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Battery monitor 6 is an application of automobile battery. It can let people know the voltage of automobile battery in real time. It helps users fully understand the battery by testing the starting and charging system voltage. It can accurately record the time of car starting and stopping. All data can be displayed on the mobile phone through Bluetooth. Easy management of vehicle battery power
Screenshots
Verdict
The clearest difference is review sentiment: BM6 at 46% against KG Serials's 0%. KG Serials's advantage is rating (3.4 vs 3.2) and iOS requirement (9.0 vs 15.6). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
KG Serials holds the better App Store score, 3.4 against 3.2. Both are backed by a comparable volume of ratings — 7 and 17 respectively. Written reviews complicate that: 0% of KG Serials's written reviews are positive against 46% of BM6's, so the app with the better star average is not the one people write more warmly about.
KG Serials ships an update monthly, BM6 every 5 weeks. The most recent releases landed on July 3, 2026 and September 22, 2026 respectively.
| Parameter | KG Serials | BM6 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (7 ratings) — better | 3.2 (17 ratings) |
| Positive reviews | 0.0% of reviews | 45.8% of reviews — better |
| Number of ratings | 7 | 17 — better |
| Update frequency | Monthly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 30 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Hangzhou Junce Instruments Co., Ltd. | Shenzhen Leagend Optoelectronics Co., Ltd. |
Customer experience
KG Serials
BM6
In-app purchases
KG Serials
No in-app purchases
BM6
No in-app purchases
