SCATalogue vs USC Trojan Check
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SCATalogue
This app streamlines the collection of shoreline oiling data during spill responses. It's designed for marine environments and uses NOAA's standard SCAT shoreline oiling summary form. Data can be easily transferred via email or other available methods.
- Shoreline cleanup assessment data collection
- Supports NOAA standard SCAT form
- Designed for marine spill response
- Data transfer via email and other methods
- JSON and geoJSON data output
- Optimized for iPad use
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The SCATalogue app is a creation of the California Department of Fish and Wildlife, Office of Spill Prevention and Response (CDFW, OSPR). SCATalogue simplifies the collection of shoreline cleanup assessment technique (SCAT) data during a spill response. Survey data attributes are based upon the National Oceanic and Atmospheric Administration (NOAA) standard SCAT shoreline oiling summary (SOS) paper form. A SCAT survey is a collection of SCAT data for a length of shoreline which is referred to as a shoreline segment. SCATalogue is designed to support spill response in the marine environment. The survey data can be transferred via email, via iTunes or other methods if available. These other methods are dependent on the user's and/or user's organizational iPad setup and/or information technology (IT) protocols. SCATalogue is, and was designed for use on an iPad, specifically the iPad mini which is used by the California Department of Fish and Wildlife, Office of Spill Prevention and Response's field response staff. CDFW OSPR's geographic information systems (GIS) unit utilizes ESRI ® GIS software almost exclusively. Data output is in JSON format. Data containing geographic/spatial data is formatted in Environmental Systems Research Institute (ESRI ®) geoJSON format. This output can be converted into to feature class(es) using ArcGIS Desktop's © ArcToolbox's "JSON To Feature" tool. CDFW OSPR GIS processes the JSON/geoJSON output from SCATalogue using this tool and other custom scripts/tools in ArcGIS Desktop © software. For further information about SCATalogue, please contact CDFW OSPR GIS at osprgis@wildlife.ca.gov. Continued use of GPS running in the background can dramatically decrease battery life.
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 rating: SCATalogue at 5.0 against USC Trojan Check's 1.7. USC Trojan Check's advantage is update cadence (every 5 weeks vs every 6 months) and ratings volume (94 vs 3). 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.
SCATalogue 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 3, so its average is the more settled of the two.
SCATalogue ships an update every 6 months, USC Trojan Check every 5 weeks. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.
| Parameter | SCATalogue | USC Trojan Check |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 1.7 (94 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 3 | 94 — better |
| Update frequency | Every 6 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.4 | 11.0 — better |
| Further details — not scored | ||
| Size | 164 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | California Department of Fish and Wildlife | University of Southern California Apps |
Customer experience
SCATalogue
USC Trojan Check
In-app purchases
SCATalogue
No in-app purchases
USC Trojan Check
No in-app purchases
Questions
Is SCATalogue free?
Is USC Trojan Check free?
Which has better reviews, SCATalogue or USC Trojan Check?
Do SCATalogue or USC Trojan Check have ads?
Which is updated more often, SCATalogue or USC Trojan Check?
Other comparisons
