WatchPower vs Callny Control
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.
Callny Control
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Based on GSM 3G 4G network, widely used] GSM 3G 4G access controller, It can be used to authorize access control, parking systems, household appliances, production automation, remote device switching, industrial remote control, etc. It can be operated anywhere without distance limitation. [Simple APP remote wireless control] The mobile APP is fully controlled, the interface is intuitive and easy to operate, and the function is more abundant. You only need to "shake" to open the door, and you can realize remote control without spending money [Intelligent ID recognition, hang up strange calls] Just dial the authorized user number, you can pass open or close the fence, door or machine. No Call charges, GSM 3G 4G access controller rejects calls from authorized numbers and then performs open/close operations. Up to 999 authorized phone numbers can be configured. [SMS smart alarm] When any user triggers the relay, a reminder text message will be sent to the designated number, the whole family will take care of it, and the alarm will be activated immediately; protect your assets through the GSM 3G 4G network.
Screenshots
Verdict
The clearest difference is update cadence: WatchPower at every 3 months against Callny Control's every 30 months. 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, Callny Control every 30 months. The most recent releases landed on August 31, 2026 and September 9, 2026 respectively.
| Parameter | WatchPower | Callny Control |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (73 ratings) — better | — |
| Positive reviews | 17.2% of reviews | — |
| Number of ratings | 73 — better | — |
| Update frequency | Every 3 months — better | Every 30 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 22 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | 祥梯 孟 | Callny Technology Co., Ltd. |
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
Callny Control
Not enough reviews yet to summarise bugs or requests.
In-app purchases
WatchPower
No in-app purchases
Callny Control
No in-app purchases









