123SmartBMS vs FE
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.
FE
Monitor your battery's charging status, remaining time, and historical data with this Bluetooth-connected device. It provides a comprehensive overview of your battery's performance.
- 500 amp battery monitoring
- Bluetooth connectivity
- Real-time charging status
- Remaining time estimation
- Historical battery data
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FE-Shunt is a versatile and easy-to-use 500 amp battery monitor.Connect to the FE-Shunt device via Bluetooth, you can read out all monitored battery parameters-such as charging status, remaining time, historical information, etc.
Screenshots
Verdict
The clearest difference is rating: 123SmartBMS at 4.5 against FE's 3.3. 123SmartBMS also leads on review sentiment (67% vs 50%). On price, ratings volume, update cadence and ads 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 holds the better App Store score, 4.5 against 3.3. Both are backed by a comparable volume of ratings — 21 and 8 respectively. Written reviews point the same way: 67% of 123SmartBMS's written reviews are positive against 50% of FE's.
123SmartBMS ships an update monthly, FE every 3 weeks. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.
| Parameter | 123SmartBMS | FE |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (21 ratings) — better | 3.3 (8 ratings) |
| Positive reviews | 66.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 21 — better | 8 |
| 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 | 15.6 — better |
| Further details — not scored | ||
| Size | 190 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Albertronic B.V. | Hangzhou Dashi Wisdom Technology Co., Ltd. |
Customer experience
123SmartBMS
FE
In-app purchases
123SmartBMS
No in-app purchases
FE
No in-app purchases
