ZDL vs USC Trojan Check
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZDL
This platform offers real-time cyber-attack prevention by providing a unique view of adversary preparations. It aims to proactively safeguard enterprises from cyber threats before they occur.
- Proactive cyber-attack prevention
- Real-time adversary monitoring
- Global cyber observatory
- Enterprise-level cyber-warfare capability
- Performance updates and bug fixes
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Blackwired defines a new approach to Threat Intelligence. The flagship Zero Day Live platform is designed to proactively prevent cyber-attacks before they happen. It is the first and only platform delivering cyber-warfare capability accessible to enterprise. The largest cyber observatory in the world with a unique lens on adversaries and their preparations to attack. Zero Day Live’s real time, measurable cyber-attack prevention takes your enterprise out of the victim pool. The team at Blackwired continues to make performance updates, bug fixes and feature rich options to enhance the user experience. Happy hunting.
USC Trojan Check
This app facilitates a safe return to campus for USC students and employees. It allows users to complete a daily wellness assessment and request access to campus spaces or departments. Essential for maintaining campus safety and operations.
- Daily wellness assessment
- Campus space access requests
- Student and employee tool
- Guest access
- Safe campus return facilitation
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Trojan Check is an essential tool used at USC to help facilitate a safe return to campus. USC Students and Employees -- including Faculty, Staff, Researchers, and Affiliates -- as well as guests, can use the Trojan Check app or corresponding website to: • Complete a wellness assessment before visiting campus, and, • Request access to a space or department on campus Stay safe and Fight On!
Screenshots
Verdict
The clearest difference is review sentiment: ZDL at 100% against USC Trojan Check's 0%. ZDL also leads on rating (5.0 vs 1.7). USC Trojan Check's advantage is ratings volume (94 vs 2) and update cadence (every 5 weeks vs every 4 months). On price, ads, in-app purchases and monetization model 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.
ZDL holds the better App Store score, 5.0 against 1.7. That said, the two scores are not equally well evidenced: USC Trojan Check has 94 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of ZDL's written reviews are positive against 0% of USC Trojan Check's.
ZDL ships an update every 4 months, USC Trojan Check every 5 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.
| Parameter | ZDL | USC Trojan Check |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 1.7 (94 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 | 94 — better |
| Update frequency | Every 4 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Blackwired Pte Ltd. | University of Southern California Apps |
Customer experience
ZDL
USC Trojan Check
In-app purchases
ZDL
No in-app purchases
USC Trojan Check
No in-app purchases
