123SmartBMS vs UltimatronFrance
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.
UltimatronFrance
Monitor your battery's health in real-time, tracking temperature, current, and voltage. Receive alarms for equalization and fault reminders from the protection system. Access historical battery parameter data.
- Real-time battery temperature monitoring
- Real-time current and voltage monitoring
- Battery equalization alarms
- Protection system fault reminders
- Historical battery parameter retrieval
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Experts in battery protection app features: *Real time monitoring of battery temperature *Real time monitoring of current and voltage *Alarm when battery equalization occurs *The protection system sends fault reminders *The parameter information of battery history can be retrieved
Screenshots
Verdict
The clearest difference is review sentiment: 123SmartBMS at 67% against UltimatronFrance's 19%. UltimatronFrance's advantage is iOS requirement (12.0 vs 16.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
123SmartBMS ships an update monthly, UltimatronFrance every 3 weeks. Both last shipped on October 24, 2026.
| Parameter | 123SmartBMS | UltimatronFrance |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (21 ratings) — better | — |
| Positive reviews | 66.7% of reviews — better | 18.8% of reviews |
| Number of ratings | 21 — better | — |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 190 MB | 71 MB |
| Age rating | 4+ | 17+ |
| Developer | Albertronic B.V. | ULTIMATRON FRANCE |
Customer experience
123SmartBMS
UltimatronFrance
In-app purchases
123SmartBMS
No in-app purchases
UltimatronFrance
No in-app purchases
