Comparison

123SmartBMS vs BMS Tool

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

BMS Tool

Monitor your battery management systems via Bluetooth. Supports multiple BMS types including Liontron, XiaoXiang, ANT, and Wattstunde. Offers a screen always-on mode and macOS compatibility.

Highlights
  • Screen Always ON mode
  • Multiple BMS support
  • Liontron BMS read-only
  • XiaoXiang BMS read-only
  • ANT BMS read-only
  • Wattstunde LiFePo4 read-only
  • macOS support
Features
Read full description

BMS Tool shows the state of your battery from its battery management system (BMS) over Bluetooth, on the iPhone, the iPad, the Mac and the Apple Watch. Supported BMS: - JBD / XiaoXiang smart BMS, also in Liontron batteries - JK BMS (Jikong) - ANT BMS, the older boards and the newer ANT-BLE boards - Seplos V2 and V3 - Redodo, LiTime, PowerQueen and Starry Sea batteries - WattCycle batteries - Wattstunde LiFePO4 and Wattstunde Nova Core batteries - Ective, LiFeBlue, KiloVault, Enerdrive, Noovi and StartCraft batteries Features: - Charge, voltage, current and power at a glance - Time until full while charging and until empty while discharging, estimated from the present current - Every cell voltage with minimum, maximum, difference and balancing - Temperature sensors, alarms and BMS information - Several batteries in one list, each with its own name - Search for new devices can be switched off: only your own batteries stay in the list - Session values and a CSV log of the readings - Home screen widget - Apple Watch app with complications: charge, cells, temperatures and alarms of the battery open on the iPhone - The display can stay on while the app is open The app reads the values of the BMS and does not change its settings. Ideas and requests are welcome at web.e77code.com/bms-tool.

Screenshots

123SmartBMS4 screens
BMS Tool3 screens

Verdict

The call

The clearest difference is rating: 123SmartBMS at 4.5 against BMS Tool's 3.9. 123SmartBMS also leads on in-app purchases (none vs 1) and ads (none vs shown). BMS Tool's advantage is device support (4 vs 2). On price, review sentiment, update cadence and iOS requirement 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. BMS Tool sells 1 one-off in-app purchase. 123SmartBMS asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

123SmartBMS holds the better App Store score, 4.5 against 3.9. Both are backed by a comparable volume of ratings — 21 and 7 respectively. Written reviews complicate that: 67% of 123SmartBMS's written reviews are positive against 71% of BMS Tool's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

123SmartBMS ships an update monthly, BMS Tool every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
123SmartBMS versus BMS Tool: the parameters behind the verdict, then further details
Parameter123SmartBMSBMS Tool
PriceFreeFree
Rating4.5 (21 ratings) — better3.9 (7 ratings)
Positive reviews66.7% of reviews71.4% of reviews — better
Number of ratings21 — better7
Update frequencyMonthly — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS16.015.0 — better
Further details — not scored
Size190 MB20 MB
Age rating4+4+
DeveloperAlbertronic B.V.e77code GmbH

Customer experience

123SmartBMS

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

BMS Tool

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews7 reviews
Positive71.4%
Neutral14.3%
Negative14.3%

In-app purchases

None

123SmartBMS

No in-app purchases

1 purchases

BMS Tool

One-time1
  • Remove Ads$3.99

Questions

Is 123SmartBMS free?
123SmartBMS is free to download, with no in-app purchases.
Is BMS Tool free?
BMS Tool is free to download, with in-app purchases available.
Which has better reviews, 123SmartBMS or BMS Tool?
123SmartBMS is rated higher. 123SmartBMS averages 4.5 out of 5 from 21 ratings, while BMS Tool averages 3.9 from 7 ratings.
Do 123SmartBMS or BMS Tool have ads?
BMS Tool shows ads; 123SmartBMS does not.
Which is updated more often, 123SmartBMS or BMS Tool?
123SmartBMS ships an update monthly, and BMS Tool every 2 months. Most recently, 123SmartBMS was updated on November 1, 2026 and BMS Tool on November 3, 2026.

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