# WatchPower vs BMS

The clearest difference is rating: BMS at 5.0 against WatchPower's 2.5. WatchPower's advantage is ratings volume (73 vs 1) and iOS requirement (11.0 vs 15.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BMS holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: WatchPower has 73 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 17% of WatchPower's written reviews are positive against 20% of BMS's.

WatchPower ships an update every 3 months, BMS every 2 months. The most recent releases landed on October 14, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | WatchPower | BMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (73 ratings)](https://appshunter.io/ios/app/watchpower/id1487569321/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bms-tool/id6471949475/reviews)** |
| Number of ratings | **73** | 1 |
| Positive reviews | 17.2% of reviews | **20.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 22 MB | 40 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [祥梯 孟](https://appshunter.io/developer/1070155084) | [秀丽 唐](https://appshunter.io/developer/1715570419) |

## 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- 🕰️ Slow refresh rate and outdated information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


### BMS

[App page](https://appshunter.io/ios/app/bms-tool/id6471949475)

Monitor and manage your device's battery health with real-time data, historical records, and customizable alerts for over-charge, over-discharge, and temperature. Connect locally via Bluetooth or remotely via Wi-Fi to track battery status, cell performance, and potential issues.

**Highlights:** Real-time battery data (current, voltage, SOC, SOH), Cell-level monitoring, Historical alarm and protection records, Customizable warning values, Bluetooth and Wi-Fi connectivity, Device sharing and management

**In-app purchases:** none


## Frequently asked questions

### Is WatchPower free?

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

### Is BMS free?

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

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

BMS is rated higher. WatchPower averages 2.5 out of 5 from 73 ratings, while BMS averages 5.0 from 1 ratings.

### Do WatchPower or BMS have ads?

Neither WatchPower nor BMS shows ads.

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

WatchPower ships an update every 3 months, and BMS every 2 months. Most recently, WatchPower was updated on October 14, 2026 and BMS on September 23, 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.*