# Ajax Security System vs Control NOVA II

The clearest difference is review sentiment: Ajax Security System at 73% against Control NOVA II's 0%. Ajax Security System also leads on rating (4.3 vs 2.8) and update cadence (fortnightly vs every 2 months). Control NOVA II's advantage is iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and monetization model 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, 4.3 against 2.8. That said, the two scores are not equally well evidenced: Ajax Security System has 270 ratings behind it against 6, 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 0% of Control NOVA II's.

Ajax Security System ships an update fortnightly, Control NOVA II every 2 months. The most recent releases landed on September 23, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Ajax Security System | Control NOVA II |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (270 ratings)](https://appshunter.io/ios/app/ajax-security-system/id1063166247/reviews)** | [2.8 (6 ratings)](https://appshunter.io/ios/app/control-nova-ii/id1452046941/reviews) |
| Number of ratings | **270** | 6 |
| Positive reviews | **73.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | Free |
| Size | 727 MB | 109 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Ajax Systems Inc](https://appshunter.io/developer/1063166246) | [TIRAS-12, TOV](https://appshunter.io/developer/1140226201) |

## 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


### Control NOVA II

[App page](https://appshunter.io/ios/app/control-nova-ii/id1452046941)

This app provides comprehensive remote access to your security system. Arm or disarm your system, monitor zone status, control automated devices like heating and lighting, and receive instant PUSH notifications for events. It also allows viewing live camera streams and managing system users.

**Highlights:** Remote arming/disarming, Zone status monitoring, Control of automatics (heating, lighting), Event log viewing, User management, PUSH notifications, Security camera stream viewing

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

**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 Control NOVA II free?

Control NOVA II is free to download, with no in-app purchases.

### Which has better reviews, Ajax Security System or Control NOVA II?

Ajax Security System is rated higher. Ajax Security System averages 4.3 out of 5 from 270 ratings, while Control NOVA II averages 2.8 from 6 ratings.

### Do Ajax Security System or Control NOVA II have ads?

Neither Ajax Security System nor Control NOVA II shows ads.

### Which is updated more often, Ajax Security System or Control NOVA II?

Ajax Security System ships an update fortnightly, and Control NOVA II every 2 months. Most recently, Ajax Security System was updated on September 23, 2026 and Control NOVA II on September 11, 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.*