# Ajax Security System vs terneo

The clearest difference is update cadence: Ajax Security System at fortnightly against terneo's every 6 weeks. Ajax Security System also leads on ratings volume (273 vs 21). terneo's advantage is iOS requirement (13.0 vs 18.0). On price, rating, review sentiment and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.4 for Ajax Security System against 4.4 for terneo. That said, the two scores are not equally well evidenced: Ajax Security System has 273 ratings behind it against 21, so its average is the more settled of the two. Written reviews are what separate them: 73% of Ajax Security System's written reviews are positive against 69% of terneo's.

Ajax Security System ships an update fortnightly, terneo every 6 weeks. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Ajax Security System | terneo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (273 ratings)](https://appshunter.io/ios/app/ajax-security-system/id1063166247/reviews) | [4.4 (21 ratings)](https://appshunter.io/ios/app/terneo/id1298591257/reviews) |
| Number of ratings | **273** | 21 |
| Positive reviews | **72.9% of reviews** | 68.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 745 MB | 52 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | **iPhone, Apple TV, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ajax Systems Inc](https://appshunter.io/developer/1063166246) | [DS ELEKTRONIKS TOV](https://appshunter.io/developer/1784712563) |

## 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


### terneo

[App page](https://appshunter.io/ios/app/terneo/id1298591257)

Control your Wi-Fi heating devices remotely from anywhere in the world. Create custom daily schedules to save electricity and ensure indoor comfort with extensive settings. Monitor heating statistics over time to optimize energy usage.

**Highlights:** Remote operation of Wi-Fi heating controllers, Customizable daily heating schedules, Energy saving via time-based temperature settings, Heating statistics and analysis, Vacation mode for economy temperature, Intuitive interface with color-coded modes

**Features:** 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 terneo free?

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

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

Ajax Security System and terneo are both rated 4.4 out of 5 on the App Store, from 273 and 21 ratings respectively.

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

Neither Ajax Security System nor terneo shows ads.

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

Ajax Security System ships an update fortnightly, and terneo every 6 weeks. Most recently, Ajax Security System was updated on October 18, 2026 and terneo on October 12, 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.*