123SmartBMS vs EPEVER Pair
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.
EPEVER Pair
This app allows users to monitor and control solar power systems. It provides real-time data and system status for solar charge controllers and off-grid inverters. Manage your solar energy solutions efficiently with this tool.
- Real-time system monitoring
- Control solar charge controllers
- Manage off-grid inverters
- View system status
- Solar application system management
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Beijing Epsolar Technology Co., Ltd. was established in March 2007 with more than 30 million RMB registered capital. We are a new and high-tech enterprise which was specialized in power products researching, manufacturing, and marketing. We provide products including solar charge controllers, off-grid inverter, LED driver and special power units etc., as well as design and supply relevant solar application systems. The company has passed the ISO9001: 2008, and products have passed CGC-SOLAR, CE, ROSH, FCC, and ETL certificate, as well as other domestic and international authoritative certification and a number of patents. The products have been extensively applied and highly appraised in a number of major projects at home and abroad. And sell in more than 120 foreign countries and regions. In July 2014, we established Shenzhen branch as our production base. In August 2014, we were listed in NATIONAL EQUITIES EXCHANGE AND QUOTATIONS and launched into capital market successfully.
Screenshots
Verdict
The clearest difference is review sentiment: 123SmartBMS at 67% against EPEVER Pair's 15%. 123SmartBMS also leads on rating (4.5 vs 2.1). EPEVER Pair's advantage is iOS requirement (9.0 vs 16.0). 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 2.1. Both are backed by a comparable volume of ratings — 21 and 15 respectively. Written reviews point the same way: 67% of 123SmartBMS's written reviews are positive against 15% of EPEVER Pair's.
123SmartBMS ships an update monthly, EPEVER Pair every 3 weeks. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.
| Parameter | 123SmartBMS | EPEVER Pair |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (21 ratings) — better | 2.1 (15 ratings) |
| Positive reviews | 66.7% of reviews — better | 14.9% of reviews |
| Number of ratings | 21 — better | 15 |
| 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 | 9.0 — better |
| Further details — not scored | ||
| Size | 190 MB | 92 MB |
| Age rating | 4+ | 4+ |
| Developer | Albertronic B.V. | BEIJING EPSOLAR TECHNOLOGY CO., LTD. |
Customer experience
123SmartBMS
EPEVER Pair
In-app purchases
123SmartBMS
No in-app purchases
EPEVER Pair
No in-app purchases









