Comparison

123SmartBMS vs Pro BMS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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.

Screenshots

123SmartBMS4 screens
Pro BMS4 screens

Verdict

The call

The clearest difference is rating: 123SmartBMS at 4.5 against Pro BMS's 1.0. 123SmartBMS also leads on ratings volume (21 vs 1). On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

123SmartBMS holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: 123SmartBMS has 21 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

123SmartBMS ships an update monthly, Pro BMS every 2 months. The most recent releases landed on September 20, 2026 and August 18, 2026 respectively.

Scorecard2 real differences · 8 level
123SmartBMS versus Pro BMS: the parameters behind the verdict, then further details
Parameter123SmartBMSPro BMS
PriceFreeFree
Rating4.5 (21 ratings) — better1.0 (1 ratings)
Positive reviews66.7% of reviews
Number of ratings21 — better1
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.6 — better
Further details — not scored
Size190 MB35 MB
Age rating4+4+
DeveloperAlbertronic B.V.Shenzhen Leagend Optoelectronics Co., Ltd.

Customer experience

123SmartBMS

All ratings21 ratings
Positive85.7%
Neutral4.8%
Negative9.5%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Pro BMS

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

123SmartBMS

No in-app purchases

None

Pro BMS

No in-app purchases

Questions

Is 123SmartBMS free?
123SmartBMS is free to download, with no in-app purchases.
Is Pro BMS free?
Pro BMS is free to download, with no in-app purchases.
Which has better reviews, 123SmartBMS or Pro BMS?
123SmartBMS is rated higher. 123SmartBMS averages 4.5 out of 5 from 21 ratings, while Pro BMS averages 1.0 from 1 ratings.
Do 123SmartBMS or Pro BMS have ads?
Neither 123SmartBMS nor Pro BMS shows ads.
Which is updated more often, 123SmartBMS or Pro BMS?
123SmartBMS ships an update monthly, and Pro BMS every 2 months. Most recently, 123SmartBMS was updated on September 20, 2026 and Pro BMS on August 18, 2026.

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