# Ajax Security System vs OMO

The clearest difference is rating: Ajax Security System at 4.4 against OMO's 3.3. Ajax Security System also leads on review sentiment (73% vs 50%) and ratings volume (279 vs 7). OMO's advantage is iOS requirement (11.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Ajax Security System holds the better App Store score, 4.4 against 3.3. That said, the two scores are not equally well evidenced: Ajax Security System has 279 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 73% of Ajax Security System's written reviews are positive against 50% of OMO's.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Ajax Security System | OMO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (279 ratings)](https://appshunter.io/ios/app/ajax-security-system/id1063166247/reviews)** | [3.3 (7 ratings)](https://appshunter.io/ios/app/omo/id1453033660/reviews) |
| Number of ratings | **279** | 7 |
| Positive reviews | **72.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | Free |
| Size | 748 MB | 86 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | **iPhone, Apple TV, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ajax Systems Inc](https://appshunter.io/developer/1063166246) | [0M0 SYSTEMS LTD](https://appshunter.io/developer/1469026837) |

## What reviewers say

### Ajax Security System

[App page](https://appshunter.io/ios/app/ajax-security-system/id1063166247)

Monitor your home or office security, receive instant alerts, and manage video surveillance and automation from a single interface. Arm/disarm your system, view visual alarm verification, and create custom automation scenarios for enhanced safety and convenience.

**Highlights:** Arm and disarm system remotely, Real-time event monitoring, Instant critical alerts, Visual alarm verification, Automation scenario creation, Mobile panic button, Manage multiple spaces

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Reliable system
- 👍 Easy to use app
- 🔒 Comprehensive security
- 💡 Convenient remote control
- 🚀 Stable and functional

**What reviewers complain about**

- 🐛 App freezes and crashes
- 👎 Constant updates
- 👎 Limited customization options
- 👎 Compatibility issues with iPad
- 👎 Buggy notifications

**Reported bugs**

- App freezing when accessing notifications
- Geofencing not working as expected
- Delayed response when arming/disarming
- Accidental panic button triggers
- Connectivity issues after WiFi changes

**Requested features**

- Ability to schedule night mode
- More sound options for door chimes
- Improved iPad app experience
- Siri/HomeKit integration
- Customizable alarm volume and notifications


### OMO

[App page](https://appshunter.io/ios/app/omo/id1453033660)

Control various smart home devices from a single application. Features include mobile and voice-activated door access, video surveillance, and apartment security management. It supports devices from multiple manufacturers within a secure wireless network.

**Highlights:** Smart Key door access, NFC and voice assistant control, OMO Face ID authentication, Video surveillance, Apartment security management, Cross-manufacturer device compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ajax Security System free?

Ajax Security System is free to download, with no in-app purchases.

### Is OMO free?

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

### Which has better reviews, Ajax Security System or OMO?

Ajax Security System is rated higher. Ajax Security System averages 4.4 out of 5 from 279 ratings, while OMO averages 3.3 from 7 ratings.

### Do Ajax Security System or OMO have ads?

Neither Ajax Security System nor OMO shows ads.

### Which is updated more often, Ajax Security System or OMO?

Ajax Security System ships an update fortnightly, and OMO fortnightly. Most recently, Ajax Security System was updated on November 6, 2026 and OMO on November 2, 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.*