Comparison

Ajax Security System vs DMSS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Ajax Security System

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
Read full description

Ajax Security System keeps you informed about what's happening at your space. Monitor Ajax system status, receive instant alerts, and manage security, video surveillance, and automation through a single intuitive interface. IN THE APP: - Arm and disarm your system with one tap - Monitor events and system status in real time - Receive critical alerts — even when your phone is in silent mode - View visual alarm verification with photos and video - Create automation scenarios - Use the mobile panic button in emergencies - Manage multiple spaces from one account, and more Over 4.5 million end users in more than 180 countries worldwide trust Ajax. We offer end-to-end solutions for protecting homes and businesses оf any scale. Ajax product portfolio includes over 300 devices for: - Intrusion protection - Video surveillance - Fire and life safety - Comfort and automation BUILD YOUR OWN SECURITY AND COMFORT WITH AJAX A SINGLE INTEGRATED ECOSYSTEM Ajax is a unified ecosystem in which intrusion protection, video surveillance, fire safety, water leak prevention, and automation work seamlessly together. You can add new devices and scale your system as space requirements grow — without compatibility issues, complex setup, or redesigning everything from scratch. INSTANT ALERTS WITH VISUAL PROOF You don't miss important events — you know exactly when and how to respond. When an intrusion, fire, or water leak is detected, the app sends a critical alert that breaks through Do Not Disturb mode. Visual alarm verification from Ajax cameras or MotionCam detectors helps you quickly understand what's happening on site. VIDEO SURVEILLANCE YOU CAN TRUST Watch live video or browse the archive directly in the app. Footage is synchronized with system events, giving you a clear visual context for every alarm and complete situational awareness. To protect your privacy, video streams use secure proprietary transmission technology, while passwordless camera authentication minimizes the risk of unauthorized access. AUTOMATION FOR ENHANCED SECURITY AND ROUTINES Set your system to operate automatically. Change security modes on a schedule, turn on lighting when motion is detected, shut off water in case of a leak, or control locks, gates, heating, and appliances. Automation scenarios run in the background — even without an internet connection — while you focus on your day. PROFESSIONAL RESPONSE, ONE TAP AWAY Connect your system to a monitoring company to access professional security services with fast alarm response. The largest alarm receiving centers and a wide range of CMS software in more than 180 countries support Ajax systems. In an emergency, press the in-app panic button to instantly transmit the event and your smartphone's location to the rapid response unit. • • • Ajax equipment is required to use the app. Devices are available from authorized Ajax Systems partners. Learn more at ajax.systems

About

DMSS

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
Currently charting
Read full description

The DMSS app can enhance your security management efficiency. You can watch real-time surveillance videos and play them back anytime, anywhere, via Wi-Fi or cellular networks. If a device alarm is triggered, DMSS will immediately push an instant notification to you. DMSS offers: 1. Real-time Live View: You can view real-time surveillance videos from the added devices anytime, anywhere, to help you better monitor the safety of your home environment. 2. Video Playback: You can quickly find the events you care about by date and event category, and playback the required historical video footage. 3. Instant Alarm Notifications: You can subscribe to different alarm events according to your needs. When an event is triggered, you will immediately receive the message notification. 4. Device Sharing You can share the device with family members for shared use and assign them different usage permissions. 5. Alarm Hub You can add a variety of peripheral accessories to the alarm hub to provide warnings for potential theft, intrusion, fire, water damage, and other situations. In case of an unforeseen event, DMSS can immediately activate alarms and send out danger notifications. 6. Visual Intercom You can add visual intercom devices to engage in video calls between the device and the DMSS, as well as perform functions like locking and unlocking. 7. Access Control You can add access control devices to check the current status of doors and view unlock records, as well as perform remote unlocking operations on the doors.

Screenshots

Ajax Security System4 screens
DMSS4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 4 level
Ajax Security System versus DMSS: the parameters behind the verdict, then further details
ParameterAjax Security SystemDMSS
PriceFreeFree
Rating4.3 (270 ratings)4.8 (79K ratings) — better
Positive reviews73.0% of reviews89.2% of reviews — better
Number of ratings27079K — better
Update frequencyFortnightlyEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#130 — better
DevicesiPhone, Apple WatchiPhone, iPod
Requires iOS18.013.0 — better
Further details — not scored
Size727 MB470 MB
Age rating4+4+
DeveloperAjax Systems IncDongBin

Customer experience

Ajax Security System

All ratings270 ratings
Positive83.0%
Neutral4.1%
Negative13.0%
Written reviews670 reviews
Positive73.0%
Neutral12.2%
Negative14.8%

DMSS

All ratings78,689 ratings
Positive97.0%
Neutral1.5%
Negative1.5%
Written reviews3,816 reviews
Positive89.2%
Neutral2.9%
Negative7.9%

User reviews

Ajax Security System

From 270 App Store ratings

What we love

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

Room to improve

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

DMSS

From 79K App Store ratings

What we love

  • 🚀 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

Room to improve

  • 🐛 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

Bugs and requests

Ajax Security System

Reported bugs

5 issues
  • 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

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

DMSS

Reported bugs

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

Requested features

5 requests
  • 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

In-app purchases

None

Ajax Security System

No in-app purchases

12 purchases

DMSS

One-time12
  • 90-Day 4G Data Plan$0.69
  • 180 days unlimited data usage$0.90
  • Monthly Basic Plan$3.49
Show 9 more
  • Monthly Basic Plan - Dual-lens$6.90
  • Monthly Pro Plan$6.99
  • Monthly 4G Data Plan$10.00
  • Monthly Pro Plan - Dual-lens$13.90
  • Annual Basic Plan$34.99
  • Annual Basic Plan - Dual-lens$69.90
  • Annual Pro Plan$69.99
  • Annual 4G Data Plan$90.00
  • Annual Pro Plan - Dual-lens$139.00

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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