# Sargassum vs Ocean Public School

The clearest difference is update cadence: Sargassum at every 5 weeks against Ocean Public School's every 17 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Sargassum ships an update every 5 weeks, Ocean Public School every 17 months. The most recent releases landed on November 4, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Sargassum | Ocean Public School |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sargassum/id6499489832/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 17 months |
| Monetization | Free | — |
| Size | 90 MB | 145 MB |
| Requires iOS | 16.4 | **15.5** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Donald Schlack](https://appshunter.io/developer/1403171629) | [NLET](https://appshunter.io/developer/1570619872) |

## What reviewers say

### Sargassum

[App page](https://appshunter.io/ios/app/sargassum/id6499489832)

This app allows users to report the coverage and thickness of seaweed on beaches, optionally including photos. The collected data, along with user coordinates, helps scientists document environmental changes over time. Recent reports are visualized on a map.

**Highlights:** Report seaweed coverage, Measure seaweed thickness, Add photos to reports, View recent reports on a map, Contribute to scientific data

**Features:** macOS Compatibility

**In-app purchases:** none


### Ocean Public School

[App page](https://appshunter.io/ios/app/ocean-public-school/id6742376689)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sargassum free?

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

### Is Ocean Public School free?

Ocean Public School is free to download, with no in-app purchases.

### Do Sargassum or Ocean Public School have ads?

Neither Sargassum nor Ocean Public School shows ads.

### Which is updated more often, Sargassum or Ocean Public School?

Sargassum ships an update every 5 weeks, and Ocean Public School every 17 months. Most recently, Sargassum was updated on November 4, 2026 and Ocean Public School on November 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*