DoubleSafe vs SCATalogue
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DoubleSafe
Enhance your online security with an extra layer of protection. This app provides two-factor authentication via push notifications or one-time passcodes to verify your identity during sign-ins.
- Two-factor authentication
- Push notification approvals
- One-time passcode generation
- Enhanced account security
- User account verification
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DoubleSafe is a two-factor authentication app that adds an additional layer of security, by requesting an additional code, when you sign in to your account. - If you choose to use Push Notifications, the DoubleSafe app will display a message asking you to 'Allow' or 'Deny' access to your user account. Confirm it is you logging in by selecting 'Allow'. - If you are using one-time passcodes, the DoubleSafe app will generate a one-time passcode that must be entered in order to access your account.
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.
Screenshots
Verdict
The clearest difference is rating: SCATalogue at 5.0 against DoubleSafe's 2.2. SCATalogue also leads on iOS requirement (12.4 vs 15.0). DoubleSafe's advantage is device support (3 vs 1). On price, ratings volume, update cadence and ads 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 2.2. Both are backed by a comparable volume of ratings — 5 and 3 respectively.
DoubleSafe ships an update every 8 months, SCATalogue every 6 months. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.
| Parameter | DoubleSafe | SCATalogue |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (5 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 5 — better | 3 |
| Update frequency | Every 8 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 15.0 | 12.4 — better |
| Further details — not scored | ||
| Size | 9 MB | 164 MB |
| Age rating | 4+ | 4+ |
| Developer | Serverdata.Net, Inc. | California Department of Fish and Wildlife |
Customer experience
DoubleSafe
SCATalogue
In-app purchases
DoubleSafe
No in-app purchases
SCATalogue
No in-app purchases









