WatchPower vs ESS Energy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
ESS Energy
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1.Register the device and fill in the customer information by scanning the bar code; 2.Display the devices position information in the map; 3.Observe single device real time operation situation; 4.Upgrade Device Version Remotely：if a prompt to update device software version, it's not for your app, just the device; 5.Upgrade Device Version Locally: you can upgrade your device by our mobile app; 6.Configure Device Parameters Locally or Remotely: you can configure your device parameters by our mobile app; 7.View Real-time Device Information Locally or Remotely: you can monitor the real-time operation of your device by our mobile app; 8.Config Device Wifi: before config device wifi, please confirm your phone connect with a WLAN that generated by device like "USR-WIFI232****" ,then search which SSID you want the device to connect.
Screenshots
Verdict
The clearest difference is update cadence: ESS Energy at every 5 weeks against WatchPower's every 3 months. WatchPower's advantage is iOS requirement (11.0 vs 16.6). On price, ads, in-app purchases and device support 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.
WatchPower ships an update every 3 months, ESS Energy every 5 weeks. The most recent releases landed on October 24, 2026 and September 10, 2026 respectively.
| Parameter | WatchPower | ESS Energy |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (75 ratings) — better | — |
| Positive reviews | 17.2% of reviews | — |
| Number of ratings | 75 — better | — |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 22 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | 祥梯 孟 | 仁义 樊 |
Bugs and 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
ESS Energy
Not enough reviews yet to summarise bugs or requests.
In-app purchases
WatchPower
No in-app purchases
ESS Energy
No in-app purchases
