Cellular Alarm Contact Sensor vs PowerDetector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cellular Alarm Contact Sensor
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Cellular alarm contact sensor with power monitoring allows you to monitor any doors, windows, gates, trailer and many more. Get notified via SMS or email when the sensor is triggered or when power loss is detected.
PowerDetector
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The PowerDetector app uses the iPhone charging status to sense AC power, allowing the iPhone to act as a remote power sensor and email notification device. Configure the PowerDetector app with email addresses, plug in the iPhone to a charger and if the power goes out an email or text message will be sent to you.
Screenshots
Verdict
The clearest difference is update cadence: Cellular Alarm Contact Sensor at every 3 weeks against PowerDetector's every 2 months. Cellular Alarm Contact Sensor also leads on iOS requirement (13.4 vs 18.6). 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.
Cellular Alarm Contact Sensor ships an update every 3 weeks, PowerDetector every 2 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | Cellular Alarm Contact Sensor | PowerDetector |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.4 — better | 18.6 |
| Further details — not scored | ||
| Size | 2 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Robert Taraszka | River Rock Logic |
In-app purchases
Cellular Alarm Contact Sensor
No in-app purchases
PowerDetector
No in-app purchases
Questions
Is Cellular Alarm Contact Sensor free?
Is PowerDetector free?
Do Cellular Alarm Contact Sensor or PowerDetector have ads?
Which is updated more often, Cellular Alarm Contact Sensor or PowerDetector?
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