WatchPower vs SMART BMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WatchPower
Monitor off-grid inverters remotely via Wi-Fi. View device status, configure settings, receive alerts for warnings or alarms, and record historical data.
- Monitor inverter status
- Configure device settings
- Receive warning/alarm notifications
- Record device data history
- Wi-Fi module integration
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WatchPower is an iOS monitoring application which can monitor off-grid inverters via Wi-Fi module. Here are the application uses: 1. Display device status during normal operation. 2. Configure device setting after installation. 3. Notify user when a warning or alarm happened. 4. Allow user record device data history.
SMART BMS
Connect to and manage your lithium battery via Bluetooth. Monitor battery status, query information, and set safety parameters. Receive alerts for battery faults and track their occurrences.
- Bluetooth battery connection
- Battery status query
- Fault alarm monitoring
- Safety parameter settings
- Password protection for settings
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1. The uniqueness of the Bluetooth name ensures that users can accurately connect and manage the corresponding lithium battery; 2. Information query management can be performed on the battery, the user can query the relevant status of each string of batteries, and replace or maintain the abnormal battery; 3. Safety setting and reading battery protection parameters, user setting parameters, you need to enter a password to modify the parameters; 4. Monitor battery fault alarms and display the current faults,and the number of faults in the battery;
Screenshots
Verdict
The clearest difference is rating: WatchPower at 2.5 against SMART BMS's 2.1. On price, review sentiment, ratings volume and update cadence 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.
WatchPower holds the better App Store score, 2.5 against 2.1. Both are backed by a comparable volume of ratings — 73 and 76 respectively. Written reviews split almost evenly too, at 17% and 17% positive.
WatchPower ships an update every 3 months, SMART BMS every 6 weeks. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.
| Parameter | WatchPower | SMART BMS |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (73 ratings) — better | 2.1 (76 ratings) |
| Positive reviews | 17.2% of reviews | 17.3% of reviews — better |
| Number of ratings | 73 | 76 — better |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 22 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | 祥梯 孟 | 所兵 邱 |
Customer experience
WatchPower
SMART BMS
User reviews
WatchPower
From 73 App Store ratingsWhat we love
- 💻 Useful for monitoring and configuring solar/battery systems
- 🔧 Allows remote configuration of inverter settings
- 🤖 Reliable when it works
Room to improve
- 🐛 Frequent connection issues and data delays
- 🕰️ Slow refresh rate and outdated information
- 🤔 Inconsistent and unreliable performance
- 📊 Lack of historical data and graphing features
- 🤯 Difficult setup and registration process
SMART BMS
From 76 App Store ratingsWhat we love
- 🚀 Functional app
- 👍 Easy to use
- 🔋 Works with lithium batteries
- 💡 Displays cell balance information
Room to improve
- 🐛 Connection issues
- 🐛 Crashes and freezes
- 🐛 Unreliable data
- 🐛 Compatibility problems with updates
- 🔋 Drains phone battery
Bugs and requests
WatchPower
Reported bugs
3 issues- Devices disappearing from the app
- Incorrect battery capacity and power readings
- Crashes and freezes when trying to access data
Requested features
5 requests- Add real-time monitoring and updates
- Improve user interface and add more visualizations
- Implement push notifications for important events
- Allow password recovery and account management
- Add support for Bluetooth connectivity
SMART BMS
Reported bugs
5 issues- Bluetooth connectivity problems
- Incorrect series/parallel configuration display
- Firmware update issues
- Inconsistent data readings
- Inability to change settings
Requested features
5 requests- Dark mode option
- Logging and historical data
- Better parameter customization
- Improved battery monitoring metrics
- Apple Watch support
In-app purchases
WatchPower
No in-app purchases
SMART BMS
No in-app purchases
