123SmartBMS vs EM3ev Battery Analyst
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.
EM3ev Battery Analyst
Monitor your EM3ev battery's performance in real-time. View voltage, current, temperature, and individual cell voltages. Track power consumption over time and access detailed battery status information.
- Bluetooth connectivity
- Real-time voltage and current readings
- Individual cell voltage monitoring
- Temperature monitoring
- Power consumption tracking
- Battery information and state display
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For EM3ev batteries Connect to battery with Bluetooth, read voltage and current information, temperature, and individual cell voltage. See power consumption over time and read battery information and state.
Screenshots
Verdict
The clearest difference is rating: EM3ev Battery Analyst at 5.0 against 123SmartBMS's 4.5. EM3ev Battery Analyst also leads on review sentiment (100% vs 67%). 123SmartBMS's advantage is 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EM3ev Battery Analyst holds the better App Store score, 5.0 against 4.5. 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. Written reviews point the same way: 67% of 123SmartBMS's written reviews are positive against 100% of EM3ev Battery Analyst's.
123SmartBMS ships an update monthly, EM3ev Battery Analyst every 2 months. The most recent releases landed on September 20, 2026 and September 16, 2026 respectively.
| Parameter | 123SmartBMS | EM3ev Battery Analyst |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (21 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 21 — better | 1 |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 190 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Albertronic B.V. | Bjørn-Andreas Lamo |
Customer experience
123SmartBMS
EM3ev Battery Analyst
In-app purchases
123SmartBMS
No in-app purchases
EM3ev Battery Analyst
No in-app purchases
Questions
Is 123SmartBMS free?
Is EM3ev Battery Analyst free?
Which has better reviews, 123SmartBMS or EM3ev Battery Analyst?
Do 123SmartBMS or EM3ev Battery Analyst have ads?
Which is updated more often, 123SmartBMS or EM3ev Battery Analyst?
Other comparisons
