# WatchPower vs i.Solar

The clearest difference is rating: WatchPower at 2.5 against i.Solar's 1.7. WatchPower also leads on ratings volume (73 vs 9) and iOS requirement (11.0 vs 13.0). i.Solar's advantage is update cadence (weekly vs every 3 months). On price, review sentiment, ads and in-app purchases 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 1.7. That said, the two scores are not equally well evidenced: WatchPower has 73 ratings behind it against 9, 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 13% of i.Solar's.

WatchPower ships an update every 3 months, i.Solar weekly. The most recent releases landed on August 31, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | WatchPower | i.Solar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (73 ratings)](https://appshunter.io/ios/app/watchpower/id1487569321/reviews)** | [1.7 (9 ratings)](https://appshunter.io/ios/app/isolar/id1632580672/reviews) |
| Number of ratings | **73** | 9 |
| Positive reviews | **17.2% of reviews** | 12.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | Free |
| Size | 22 MB | 51 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [祥梯 孟](https://appshunter.io/developer/1070155084) | [Trusted UPS Manufacturing Company](https://appshunter.io/developer/1632202346) |

## 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- 🕰️ Slow refresh rate and outdated information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


### i.Solar

[App page](https://appshunter.io/ios/app/isolar/id1632580672)

Monitor your inverters remotely with real-time data and control capabilities. This app allows for daily data tracking, command sending, and remote device management.

**Highlights:** Daily data monitoring, Real-time data enquiry, Command sending, Remote device control

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is WatchPower free?

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

### Is i.Solar free?

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

### Which has better reviews, WatchPower or i.Solar?

WatchPower is rated higher. WatchPower averages 2.5 out of 5 from 73 ratings, while i.Solar averages 1.7 from 9 ratings.

### Do WatchPower or i.Solar have ads?

Neither WatchPower nor i.Solar shows ads.

### Which is updated more often, WatchPower or i.Solar?

WatchPower ships an update every 3 months, and i.Solar weekly. Most recently, WatchPower was updated on August 31, 2026 and i.Solar on September 8, 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.*