# O3 Alarm vs QOOLA

The clearest difference is iOS requirement: O3 Alarm at 7.0 against QOOLA's 12.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | O3 Alarm | QOOLA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/o3-alarm/id950579931/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Free | — |
| Size | 71 MB | 27 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chuango Security Technology Corporation](https://appshunter.io/developer/534068551) | [Chi Chung Wong](https://appshunter.io/developer/1693525282) |

## What reviewers say

### O3 Alarm

[App page](https://appshunter.io/ios/app/o3-alarm/id950579931)

This security system app provides 360° protection for homes and small businesses. It allows remote monitoring, control of sensors, and customizable alerts for intrusions, floods, smoke, or gas. Manage your system, set routines, and receive notifications for enhanced safety and convenience.

**Highlights:** 360° protection with up to 50 wireless sensors, Intrusion, flood, smoke, and gas detection alerts, Customizable entry and exit delays, Adjustable siren duration and volume (up to 95 dB), Smartphone, remote control, and panel interaction, RFID tag management and SMS notifications, Supports multiple users and smartphones

**In-app purchases:** none


### QOOLA

[App page](https://appshunter.io/ios/app/qoola/id6476958799)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is O3 Alarm free?

O3 Alarm is free to download, with no in-app purchases.

### Is QOOLA free?

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

### Do O3 Alarm or QOOLA have ads?

Neither O3 Alarm nor QOOLA shows ads.

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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.*