Comparison

St John's vs Sargassum

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Report seaweed on beaches

Free

📚 Education

No ratingsView app →

About

St John's

Features

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Esta es la aplicación para padres del St John's. Conecta a las familias con el Colegio y brinda varias herramientas: - Acceso a las últimas novedades del Colegio - Cuaderno de comunicaciones - Acceso a boletines y otros informes académicos - Acceso a documentos de interés general

About

Sargassum

Features

Read full description

The Sargassum APP lets you record the amount of seaweed which washes up on beaches. You report on the seaweed mat's coverage on the beach as well as its thickness. You can also take a photo if you wish. When you upload the information your coordinates are provided and scientists can use the information to document changes over time. Recent reports are shown on a map. You can use this information to help plan your beach day but remember, many communities clear their beaches daily.

Screenshots

St John's4 screens

Sargassum4 screens

Verdict

The call

The clearest difference is update cadence: St John's at fortnightly against Sargassum's every 5 weeks. St John's also leads on iOS requirement (14.2 vs 16.4). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

St John's ships an update fortnightly, Sargassum every 5 weeks. Both last shipped on September 17, 2026.

Scorecard2 real differences · 4 level

St John's versus Sargassum: the parameters behind the verdict, then further details
Parameter	St John's	Sargassum
Price	Free	Free
Update frequency	Fortnightly — better	Every 5 weeks
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	14.2 — better	16.4
Further details — not scored
Size	163 MB	90 MB
Age rating	4+	4+
Developer	Fundacion Escuelas San Juan	Donald Schlack

In-app purchases

None

St John's

No in-app purchases

None

Sargassum

No in-app purchases

Questions

Is St John's free?

St John's is free to download, with no in-app purchases.

Is Sargassum free?

Sargassum is free to download, with no in-app purchases.

Do St John's or Sargassum have ads?

Neither St John's nor Sargassum shows ads.

Which is updated more often, St John's or Sargassum?

St John's ships an update fortnightly, and Sargassum every 5 weeks. Most recently, St John's was updated on September 17, 2026 and Sargassum on September 17, 2026.