Protos Connect vs Metro Blue Line
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Protos Connect
This security application offers security officers essential tools and insights for site protection. It helps in safeguarding client sites by addressing their specific requirements.
- Security officer tools
- Site safeguarding insights
- Client site protection
- Unique requirement management
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Protos Connect is our proprietary security application, which provides security officers with invaluable tools and insights to assist in safeguarding each client site and its unique requirements.
Metro Blue Line
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Metro Blue Line is a dedicated mobile application designed exclusively for off-duty police officers, empowering them to take control of their shift scheduling for private security assignments. Created with law enforcement professionals in mind, this app offers a seamless and efficient platform to connect officers with opportunities for additional income while ensuring the safety and security of private businesses. Key Features: Flexible Scheduling: Metro Blue Line allows off-duty police officers to flexibly manage their work schedules, enabling them to pick up shifts that fit their availability and preferences. Verified Opportunities: Gain access to a wide range of verified private security assignments, ensuring that officers can choose from reputable and legitimate job opportunities. Real-time Availability: Easily view and update your availability in real-time, making it convenient to find and accept security shifts that align with your personal schedule. Diverse Assignments: Explore a variety of security assignments, from event security and property protection to specialized security roles, giving officers the freedom to diversify their experience and income. Metro Blue Line is your partner in taking charge of your off-duty work schedule, offering a platform that prioritizes your safety and financial well-being. Join our community of dedicated law enforcement professionals today and experience the freedom to choose when and where you work.
Screenshots
Verdict
The clearest difference is update cadence: Protos Connect at fortnightly against Metro Blue Line's every 4 months. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Protos Connect ships an update fortnightly, Metro Blue Line every 4 months. The most recent releases landed on October 30, 2026 and October 3, 2026 respectively.
| Parameter | Protos Connect | Metro Blue Line |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (46 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 46 — better | — |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.2 — better | 15.1 |
| Further details — not scored | ||
| Size | 89 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Protos Security, LLC. | Metro Blue Line |
In-app purchases
Protos Connect
No in-app purchases
Metro Blue Line
No in-app purchases








