# Fumis vs WatchPower

The clearest difference is rating: Fumis at 3.5 against WatchPower's 2.5. WatchPower's advantage is ratings volume (73 vs 2) and review sentiment (17% vs 8%). On price, update cadence, 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.

Fumis holds the better App Store score, 3.5 against 2.5. That said, the two scores are not equally well evidenced: WatchPower has 73 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 8% of Fumis's written reviews are positive against 17% of WatchPower's, so the app with the better star average is not the one people write more warmly about.

Fumis ships an update every 5 months, WatchPower every 3 months. The most recent releases landed on June 11, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | Fumis | WatchPower |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/fumis/id957775092/reviews)** | [2.5 (73 ratings)](https://appshunter.io/ios/app/watchpower/id1487569321/reviews) |
| Number of ratings | 2 | **73** |
| Positive reviews | 8.3% of reviews | **17.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 21 MB | 22 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Atech d.o.o.](https://appshunter.io/developer/957775091) | [祥梯 孟](https://appshunter.io/developer/1070155084) |

## What reviewers say

### Fumis

[App page](https://appshunter.io/ios/app/fumis/id957775092)

Control your heating device remotely from anywhere using your smart device. This application offers intuitive menu navigation for managing heating functions, monitoring status, and receiving alerts.

**Highlights:** Remote heating device control, Intuitive menu structure, Real-time status monitoring, Fuel level alerts, Delayed start/stop functionality, Temperature and power setting

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Fumis free?

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

### Is WatchPower free?

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

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

Fumis is rated higher. Fumis averages 3.5 out of 5 from 2 ratings, while WatchPower averages 2.5 from 73 ratings.

### Do Fumis or WatchPower have ads?

Neither Fumis nor WatchPower shows ads.

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

Fumis ships an update every 5 months, and WatchPower every 3 months. Most recently, Fumis was updated on June 11, 2026 and WatchPower on August 31, 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.*