# Alarmhandler Sensor vs MeterWorks Vibrometer

The clearest difference is in-app purchases: Alarmhandler Sensor at none against MeterWorks Vibrometer's 1. Alarmhandler Sensor also leads on iOS requirement (9.0 vs 17.0). MeterWorks Vibrometer's advantage is update cadence (every 2 weeks vs every 34 months). On price, ads and device support there is nothing between them.

Both are free to download. MeterWorks Vibrometer sells 1 one-off in-app purchase. Alarmhandler Sensor asks for nothing beyond the download.

Alarmhandler Sensor ships an update every 34 months, MeterWorks Vibrometer every 2 weeks. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Alarmhandler Sensor | MeterWorks Vibrometer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/alarmhandler-sensor/id1486606462/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 7 MB | 7 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Compelling Software](https://appshunter.io/developer/964809111) | [Emil Deak](https://appshunter.io/developer/1883312248) |

## What reviewers say

### Alarmhandler Sensor

[App page](https://appshunter.io/ios/app/alarmhandler-sensor/id1486606462)

Transform old phones into a cohesive security system. Integrate SMS alarms, IP cameras, and existing devices into one controllable platform. Offers affordable, DIY security solutions.

**Highlights:** Integrates SMS alarm systems, Connects IP cameras, Utilizes old phones as sensors, Unified control via one app, DIY security system

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### MeterWorks Vibrometer

[App page](https://appshunter.io/ios/app/meterworks-vibrometer/id6779408803)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MessWerk Pro | $7.99 | one-time |


## Frequently asked questions

### Is Alarmhandler Sensor free?

Alarmhandler Sensor is free to download, with no in-app purchases.

### Is MeterWorks Vibrometer free?

MeterWorks Vibrometer is free to download, with in-app purchases available.

### Do Alarmhandler Sensor or MeterWorks Vibrometer have ads?

Neither Alarmhandler Sensor nor MeterWorks Vibrometer shows ads.

### Which is updated more often, Alarmhandler Sensor or MeterWorks Vibrometer?

Alarmhandler Sensor ships an update every 34 months, and MeterWorks Vibrometer every 2 weeks. Most recently, Alarmhandler Sensor was updated on November 6, 2026 and MeterWorks Vibrometer on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*