PVbutler vs WatchPower
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PVbutler
Monitor your photovoltaic plant's performance remotely. Access energy yield, income, and system status wirelessly. Requires registration with the Sacolar PV Data Center.
- Remote monitoring of photovoltaic plants
- Access energy yield data
- Track income generation
- View system status
- Wireless data access
- Compatible with Sacolar PV Data Center
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A client software for monitoring the photovoltaic plant; it can collect the plant running info from Sacolar PV Data Center, such as energy yield, income and system status, which can be remotely and wirelessly accessed by the user. At present it supports plant which is registered in Sacolar PV Data Center(server.pvbutler.com)
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.
Screenshots
Verdict
The clearest difference is rating: PVbutler at 2.9 against WatchPower's 2.5. WatchPower's advantage is ratings volume (75 vs 15). On price, review sentiment, update cadence and ads 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.
PVbutler holds the better App Store score, 2.9 against 2.5. That said, the two scores are not equally well evidenced: WatchPower has 75 ratings behind it against 15, so its average is the more settled of the two. Written reviews split almost evenly too, at 18% and 17% positive.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | PVbutler | WatchPower |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (15 ratings) — better | 2.5 (75 ratings) |
| Positive reviews | 17.6% of reviews — better | 17.2% of reviews |
| Number of ratings | 15 | 75 — better |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 214 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Growatt New Energy Technology Co.,Ltd | 祥梯 孟 |
Customer experience
PVbutler
WatchPower
Bugs and requests
PVbutler
Not enough reviews yet to summarise bugs or 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
In-app purchases
PVbutler
No in-app purchases
WatchPower
No in-app purchases
