123SmartBMS vs BM6
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
123SmartBMS
This app monitors and manages lithium battery packs, ensuring optimal condition and extended lifespan. It tracks cell voltages, temperatures, and currents, while balancing cells during charging. Connect via Bluetooth to view real-time battery status and control charging/discharging.
- Monitors cell voltages and temperatures
- Tracks in- and outgoing currents
- Balances cells during charging
- Bluetooth connectivity for real-time data
- Controls charge/discharge signals
- Extends battery pack lifespan
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123\SmartBMS is an easy to use yet advanced, modular BMS to keep your lithium batteries in perfect condition, increasing the lifespan of the battery pack. The system measures important data like cell voltages, cell temperatures and in- and outgoing currents. It also balances all cells to the same voltage during charging. The BMS supervises the whole battery pack and has two signal relays to indicate “allow to charge” and “allow to discharge”. These signal relays can control chargers and inverters with “enable”/”disable” signals or by connecting an energy efficient power relay to the signal relay. An example is the 123\SmartRelay. Easily connect your phone to the BMS using Bluetooth to see relevant information including state of charge, energy consumed, energy stored, in- and outgoing current, cell voltages and temperatures. With 123\SmartBMS, your battery pack is in safe hands.
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 rating: 123SmartBMS at 4.5 against BM6's 3.2. 123SmartBMS also leads on review sentiment (67% vs 46%). 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.
123SmartBMS holds the better App Store score, 4.5 against 3.2. Both are backed by a comparable volume of ratings — 21 and 17 respectively. Written reviews point the same way: 67% of 123SmartBMS's written reviews are positive against 46% of BM6's.
123SmartBMS ships an update monthly, BM6 every 5 weeks. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.
| Parameter | 123SmartBMS | BM6 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (21 ratings) — better | 3.2 (17 ratings) |
| Positive reviews | 66.7% of reviews — better | 45.8% of reviews |
| Number of ratings | 21 — better | 17 |
| Update frequency | Monthly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod, Apple Watch — better |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 190 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Albertronic B.V. | Shenzhen Leagend Optoelectronics Co., Ltd. |
Customer experience
123SmartBMS
BM6
In-app purchases
123SmartBMS
No in-app purchases
BM6
No in-app purchases
