Ajax PRO vs U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ajax PRO
This app empowers security system installers and company employees to manage and configure Ajax security systems. It facilitates quick connections, adjustments, and testing of devices, offering extensive control over an unlimited number of security systems, user access, and automation scenarios.
- Administer unlimited security systems
- Monitor system status and adjust settings
- Manage user access rights
- Create objects and connect equipment
- Test devices and connect cameras
- Customize automation scenarios and security schedules
- Connect hubs to monitoring stations
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Ajax PRO: Tool for Engineers streamlines Ajax system installation, configuration, and maintenance. Easily navigate the intuitive interface and manage thousands of sites on the go. Access project-grade devices available exclusively to authorized Ajax Systems partners and unlock the full capabilities of Ajax solutions. INSTALL AND CONFIGURE SYSTEMS USING ONLY A SMARTPHONE · Add wireless devices by scanning QR codes · Add wired devices with automatic line scanning · Test devices in just a few taps · Configure devices with in-app wizards and guidance · Access manuals and documentation during installation RESOLVE MAINTENANCE REQUESTS REMOTELY · Adjust detector sensitivity · Check device states and battery levels · Configure automation scenarios · Add users and manage access rights · Temporarily or permanently deactivate devices · Monitor system faults and compliance in real time MANAGE THOUSANDS OF SITES EFFICIENTLY · Quickly find sites, users, and devices with smart search and flexible filters · Track all system activity with a detailed, non-editable event log · Focus on critical events with customizable notifications · Switch seamlessly between personal and company accounts · Connect your account to multiple companies GET SECURE ACCESS TO CLIENT SYSTEMS · Log in via password, Face ID, or fingerprint · Two-factor authentication (2FA) support · Single Sign-On (SSO) for corporate accounts · Full session control with instant session termination Over 4.5 million users across more than 180 countries trust Ajax. We offer end-to-end solutions for protecting homes and businesses оf any scale. The Ajax product portfolio includes more than 300 devices for: · Intrusion protection · Video surveillance · Fire and life safety · Comfort and automation • • • Ajax equipment is required to use the app. Devices are available through authorized Ajax Systems partners. Learn more at ajax.systems
U
Control your wireless security system remotely from your mobile device. Arm or disarm your home, manage automation devices, and receive instant event notifications. The app supports managing multiple security systems and groups.
- Remote arming and disarming
- Home automation device control
- Push notification alerts
- Event monitoring
- Manage multiple security systems
- Manage multiple groups per system
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The app is designed to control a wireless security system U-Prox. Now, regardless of location, you can arm and disarm your home from your mobile phone, control home automation devices, receive push-notifications and monitor events for a specified period of time. In one application you can manage several security systems (for example: an apartment and a cottage). Each system has one or more groups (for example: a house, a garage, etc.) The application uses advanced data transmission and protection technologies, operates an autonomous security system or operates with a professional monitoring service.
Screenshots
Verdict
Ajax PRO and U both sit at 4.6 stars, but that hides the real split: 72% of Ajax PRO's written reviews are positive against 56% of U's. U's advantage is iOS requirement (16.0 vs 18.0). On price, rating, ratings volume and update cadence 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
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 — 4.6 for Ajax PRO against 4.7 for U. Both are backed by a comparable volume of ratings — 12 and 32 respectively. Written reviews are what separate them: 72% of Ajax PRO's written reviews are positive against 56% of U's.
Ajax PRO ships an update fortnightly, U monthly. The most recent releases landed on September 16, 2026 and September 13, 2026 respectively.
| Parameter | Ajax PRO | U |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (12 ratings) | 4.7 (32 ratings) — better |
| Positive reviews | 72.0% of reviews — better | 56.0% of reviews |
| Number of ratings | 12 | 32 — better |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 638 MB | 145 MB |
| Age rating | 4+ | 4+ |
| Developer | AJAX SCIENTIFIC AND PRODUCTION ENTERPRISE LIMITED LIABILITY COMPANY | a2softin |
Customer experience
Ajax PRO
U
In-app purchases
Ajax PRO
No in-app purchases
U
No in-app purchases









