Good Night System vs WatchPower
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Good Night System
This iOS companion app monitors your observatory while you sleep. It will alert you via your iPhone if any issues arise, ensuring peace of mind for astronomers. A free PC application is also available for download.
- Observatory monitoring
- Sleep-time alerts
- iPhone wake-up notifications
- Companion iOS app
- Free PC application available
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The iOS companion for our Good Night System. With this app, your observatory will be monitored while you sleep... at last, and should anything go wrong, your iPhone will wake you up. Before purchasing, please download and try the free app to check everything runs fine. Please visit our web site for details and to download the FREE Windows PC application
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: Good Night System at 3.7 against WatchPower's 2.5. Good Night System also leads on review sentiment (50% vs 17%) and iOS requirement (8.0 vs 11.0). WatchPower's advantage is ratings volume (73 vs 3) and update cadence (every 3 months vs every 6 months). On price, ads, in-app purchases and monetization model 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.
Good Night System holds the better App Store score, 3.7 against 2.5. That said, the two scores are not equally well evidenced: WatchPower has 73 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 50% of Good Night System's written reviews are positive against 17% of WatchPower's.
Good Night System ships an update every 6 months, WatchPower every 3 months. The most recent releases landed on June 6, 2026 and August 31, 2026 respectively.
| Parameter | Good Night System | WatchPower |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | 2.5 (73 ratings) |
| Positive reviews | 50.0% of reviews — better | 17.2% of reviews |
| Number of ratings | 3 | 73 — better |
| Update frequency | Every 6 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 8.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 19 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Lunatico Astronomia S. L. | 祥梯 孟 |
Customer experience
Good Night System
WatchPower
Bugs and requests
Good Night System
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
Good Night System
No in-app purchases
WatchPower
No in-app purchases
