Pro BMS vs TN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pro BMS
This utility app measures and displays real-time battery parameters like voltage, current, and capacity. It offers customizable protection functions and allows for voltage/current curve export. Control and monitoring are available via a mobile app.
- Real-time voltage and current measurement
- Power, charge, and discharge capacity monitoring
- Customizable protection functions (overvoltage, overcurrent, etc.)
- Color LCD display of comprehensive data
- Voltage and current curve display and export
- Mobile app control and communication
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The Pro BMS series voltage and ammeter is a new coulomb meter that can measure various physical parameters such as voltage, current, power, charge and discharge capacity, watt-hour, time, etc. At the same time, parameters can also be set to realize various protection functions such as overvoltage protection, undervoltage protection, overcurrent protection, overpower protection, overtemperature protection and time-limited protection. The meter can automatically identify the direction of current flow In addition, the battery capacity can be monitored in real time and the measured data is displayed on a color LCD, which displays comprehensive and user-friendly information. The Pro BMS series voltage and ammeter adds the function of displaying and exporting voltage and current curves based on the original functions. At the same time, it can be controlled by mobile APP and communication.
TN
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TN-BMS Lithium Battery APP Description This is the exclusive TN-BMS Lithium Battery Monitor APP 1) Now you can monitor your battery on your phone directly from the BMS. 2) The "Device" tab can direct connect or scan the mac address to connect the battery device. 3) Displays the battery information on the “Dashboard” tab including : State of Charge, Voltage, Capacity, Status, Protection, Current, Power, Cycles, Temperature, Charge/Discharge Switch and so on. 4) The "Parameter" tab include some device info, Such as Bluetooth Name, Norminal capacity, Cycle capacity, Cell num, Version and so on. 5) This APP functions through Bluetooth 5.0, Maximum distance of communication on a typical phone is 10 meters (30 feet). 6) Each battery will only allow one Bluetooth connection at a time.
Screenshots
Verdict
The clearest difference is iOS requirement: TN at 12.0 against Pro BMS's 15.6. On price, ads, in-app purchases and device support 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.
| Parameter | Pro BMS | TN |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 35 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Leagend Optoelectronics Co., Ltd. | BMS Technologies LTD |
In-app purchases
Pro BMS
No in-app purchases
TN
No in-app purchases









