# WatchPower vs SMART BMS

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.

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.

## The numbers

| Metric | WatchPower | SMART BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (73 ratings)](https://appshunter.io/ios/app/watchpower/id1487569321/reviews)** | [2.1 (76 ratings)](https://appshunter.io/ios/app/smart-bms/id1519968339/reviews) |
| Number of ratings | 73 | **76** |
| Positive reviews | 17.2% of reviews | **17.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 22 MB | 65 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [祥梯 孟](https://appshunter.io/developer/1070155084) | [所兵 邱](https://appshunter.io/developer/1519230775) |

## What reviewers say

### WatchPower

[App page](https://appshunter.io/ios/app/watchpower/id1487569321)

Monitor off-grid inverters remotely via Wi-Fi. View device status, configure settings, receive alerts for warnings or alarms, and record historical data.

**Highlights:** Monitor inverter status, Configure device settings, Receive warning/alarm notifications, Record device data history, Wi-Fi module integration

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 💻 Useful for monitoring and configuring solar/battery systems
- 🔧 Allows remote configuration of inverter settings
- 🤖 Reliable when it works

**What reviewers complain about**

- 🐛 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- 🕰️ Slow refresh rate and outdated information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

**Reported bugs**

- Devices disappearing from the app
- Incorrect battery capacity and power readings
- Crashes and freezes when trying to access data

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/smart-bms/id1519968339)

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.

**Highlights:** Bluetooth battery connection, Battery status query, Fault alarm monitoring, Safety parameter settings, Password protection for settings

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Functional app
- 👍 Easy to use
- 🔋 Works with lithium batteries
- 💡 Displays cell balance information

**What reviewers complain about**

- 🐛 Connection issues
- 🐛 Crashes and freezes
- 🐛 Unreliable data
- 🐛 Compatibility problems with updates
- 🔋 Drains phone battery

**Reported bugs**

- Bluetooth connectivity problems
- Incorrect series/parallel configuration display
- Firmware update issues
- Inconsistent data readings
- Inability to change settings

**Requested features**

- Dark mode option
- Logging and historical data
- Better parameter customization
- Improved battery monitoring metrics
- Apple Watch support


## Frequently asked questions

### Is WatchPower free?

WatchPower is free to download, with no in-app purchases.

### Is SMART BMS free?

SMART BMS is free to download, with no in-app purchases.

### Which has better reviews, WatchPower or SMART BMS?

WatchPower is rated higher. WatchPower averages 2.5 out of 5 from 73 ratings, while SMART BMS averages 2.1 from 76 ratings.

### Do WatchPower or SMART BMS have ads?

Neither WatchPower nor SMART BMS shows ads.

### Which is updated more often, WatchPower or SMART BMS?

WatchPower ships an update every 3 months, and SMART BMS every 6 weeks. Most recently, WatchPower was updated on October 14, 2026 and SMART BMS on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*