WWF SASSI vs SeafoodCheck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WWF SASSI
Read full descriptionHide full description
WWF-SASSI is all about providing information! We aim to educate all participants in the seafood trade about marine conservation issues and create a market incentive to drive positive change at sea in this way. Through using our seafood list, you can know which seafood species to tuck into with a clear conscience (green), which to think twice about because of associated environmental impacts (orange), and which to avoid altogether (red). We help you make ocean-friendly seafood choices, for the love of our oceans. For more info, visit http://www.wwf.org.za/sassi.
SeafoodCheck
This app provides a guide to mercury levels in seafood, drawing data from the FDA. It helps users identify fish with lower mercury content, offering advice for pregnant women, breastfeeding mothers, and young children. Easily check mercury levels and eating recommendations by typing in the name of any fish or seafood.
- Mercury level data from FDA
- Eating guide based on mercury content
- Searchable fish and seafood database
- Recommendations for specific groups
- User-friendly interface
Read full descriptionHide full description
SeafoodCheck (formerly FishToxicity) is your ultimate pocket guide to mercury levels in seafood with trustworthy data from FDA. Pregnant women, those who may become pregnant, breastfeeding mothers, and young children are encouraged to eat more fish and to eat a variety of fish from choices that are lower in mercury according to advice from FDA and EPA in 2014. You can easily type in the name of the fish/seafood you are about to buy or eat and check out its mercury level and eating guide. The mercury concentration data presented in this app is from FDA: Mercury Levels in Commercial Fish and Shellfish (1990-2010). Level classification and eating guide are from NRDC's Consumer Guide to Mercury in Fish.
Screenshots
Verdict
The clearest difference is update cadence: SeafoodCheck at every 2 months against WWF SASSI's every 7 months. SeafoodCheck also leads on iOS requirement (10.0 vs 13.4). 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.
WWF SASSI ships an update every 7 months, SeafoodCheck every 2 months. The most recent releases landed on September 26, 2026 and October 7, 2026 respectively.
| Parameter | WWF SASSI | SeafoodCheck |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.4 (11 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 11 — better |
| Update frequency | Every 7 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.4 | 10.0 — better |
| Further details — not scored | ||
| Size | 40 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Brand Foundry (Pty) Ltd | Yaoyu Yang |
In-app purchases
WWF SASSI
No in-app purchases
SeafoodCheck
No in-app purchases
Questions
Is WWF SASSI free?
Is SeafoodCheck free?
Do WWF SASSI or SeafoodCheck have ads?
Which is updated more often, WWF SASSI or SeafoodCheck?
Other comparisons
