# Ajax Security System vs DMSS

The clearest difference is rating: DMSS at 4.8 against Ajax Security System's 4.3. DMSS also leads on ratings volume (79K vs 270) and review sentiment (89% vs 73%). Ajax Security System's advantage is in-app purchases (none vs 12). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DMSS sells 12 one-off in-app purchases. Ajax Security System asks for nothing beyond the download.

DMSS holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: DMSS has 79K ratings behind it against 270, 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 89% of DMSS's.

Ajax Security System ships an update fortnightly, DMSS every 10 days. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Ajax Security System | DMSS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (270 ratings)](https://appshunter.io/ios/app/ajax-security-system/id1063166247/reviews) | **[4.8 (79K ratings)](https://appshunter.io/ios/app/dmss/id1493268178/reviews)** |
| Number of ratings | 270 | **79K** |
| Positive reviews | 73.0% of reviews | **89.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#125** |
| Size | 727 MB | 470 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ajax Systems Inc](https://appshunter.io/developer/1063166246) | [DongBin](https://appshunter.io/developer/1757539852) |

## 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


### DMSS

[App page](https://appshunter.io/ios/app/dmss/id1493268178)

**Currently charting:** #125 Top Free · Lifestyle (US App Store)

Monitor your home or business security with real-time live video feeds and playback. Receive instant notifications for triggered alarms and manage access control. Share device access with family and utilize visual intercom features.

**Highlights:** Real-time live video streaming, Video playback by date and event, Instant alarm notifications, Device sharing with permissions, Alarm hub for various sensors, Visual intercom with remote unlock, Access control status and history

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 90-Day 4G Data Plan | $0.69 | one-time |
| 180 days unlimited data usage | $0.90 | one-time |
| Monthly Basic Plan | $3.49 | one-time |
| Monthly Basic Plan - Dual-lens | $6.90 | one-time |
| Monthly Pro Plan | $6.99 | one-time |
| Monthly 4G Data Plan | $10.00 | one-time |
| Monthly Pro Plan - Dual-lens | $13.90 | one-time |
| Annual Basic Plan | $34.99 | one-time |
| Annual Basic Plan - Dual-lens | $69.90 | one-time |
| Annual Pro Plan | $69.99 | one-time |
| Annual 4G Data Plan | $90.00 | one-time |
| Annual Pro Plan - Dual-lens | $139.00 | one-time |

**What reviewers like**

- 🚀 Excellent app for security camera monitoring
- 👍 Intuitive and easy to use interface
- 🔒 Real-time alerts and ability to view cameras anytime
- 🔍 Top-notch image quality and streaming speed
- 👍 User-friendly and reliable system

**What reviewers complain about**

- 🐛 Occasional connection issues and app crashes
- 🐛 Playback functionality can be unreliable or difficult to use
- 🐛 Notifications and alarm settings can be inconsistent
- 🐛 Time/date display issues, especially with daylight savings
- 🐛 Difficulty finding and reviewing specific recorded events

**Reported bugs**

- Inconsistent connection and playback issues
- Notifications not working as expected
- Time/date display problems
- Crashes and freezes when using certain features

**Requested features**

- Ability to turn cameras on/off individually within the app
- Faster forward/rewind options for playback
- Custom notification sounds
- More flexible scheduling and notification settings
- Improved integration with other smart home/security devices


## Frequently asked questions

### Is Ajax Security System free?

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

### Is DMSS free?

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

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

DMSS is rated higher. Ajax Security System averages 4.3 out of 5 from 270 ratings, while DMSS averages 4.8 from 79K ratings.

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

Neither Ajax Security System nor DMSS shows ads.

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

Ajax Security System ships an update fortnightly, and DMSS every 10 days. Most recently, Ajax Security System was updated on September 23, 2026 and DMSS on September 24, 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.*