Comparison

Monotp vs Cellular Alarm Contact Sensor

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Monotp

Features
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Monotp converts your passive OTP process to active push notification. It works like magic! When you use Monotp's Chrome Extension, it will identify your visited website's OTP request and will send it to your mobile phone as a push notification. When you Accept that request on your phone, your code will be generated on your mobile phone and send it back to Monotp's Chrome Extension. That extension will put your OTP code to the OTP text box and will redirect you to the application automatically. Simple is it? Do you have security concerns? Let's talk about it; Monotp doesn't share your secrets with any other app o even it's own Chrome Extension. Your secrets remain on your mobile phone (and sure encrypted). When you visit a page, Chrome Extension will only ask your phone an OTP for that application. Your OTP will be generated on your phone and send back to Chrome Extension without sharing any secrets. Compared to any other OTP Authenticators, Monotp works lighting fast, accepts your request, informs you and completes your OTP process Secure and Wisely! Give it a try and let us know what we can do better!

About

Cellular Alarm Contact Sensor

Features
Read full description

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.

Screenshots

Monotp4 screens
Cellular Alarm Contact Sensor4 screens

Verdict

The call

The clearest difference is update cadence: Cellular Alarm Contact Sensor at every 3 weeks against Monotp's every 11 months. Cellular Alarm Contact Sensor also leads on iOS requirement (13.4 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Monotp ships an update every 11 months, Cellular Alarm Contact Sensor every 3 weeks. Both last shipped on November 7, 2026.

Scorecard2 real differences ยท 4 level
Monotp versus Cellular Alarm Contact Sensor: the parameters behind the verdict, then further details
ParameterMonotpCellular Alarm Contact Sensor
PriceFreeFree
Update frequencyEvery 11 monthsEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.4 โ€” better
Further details โ€” not scored
Size270 MB2 MB
Age rating4+4+
DeveloperMonoFor, Inc.Robert Taraszka

In-app purchases

None

Monotp

No in-app purchases

None

Cellular Alarm Contact Sensor

No in-app purchases

Questions

Is Monotp free?
Monotp is free to download, with no in-app purchases.
Is Cellular Alarm Contact Sensor free?
Cellular Alarm Contact Sensor is free to download, with no in-app purchases.
Do Monotp or Cellular Alarm Contact Sensor have ads?
Neither Monotp nor Cellular Alarm Contact Sensor shows ads.
Which is updated more often, Monotp or Cellular Alarm Contact Sensor?
Monotp ships an update every 11 months, and Cellular Alarm Contact Sensor every 3 weeks. Most recently, Monotp was updated on November 7, 2026 and Cellular Alarm Contact Sensor on November 7, 2026.

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