# COSEA vs Adage

The clearest difference is device support: COSEA at 3 against Adage's 1. COSEA also leads on iOS requirement (12.0 vs 16.4). On price, update cadence, ads and in-app purchases there is nothing between them.

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

COSEA ships an update every 5 weeks, Adage every 2 months. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | COSEA | Adage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cosea/id6503368314/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 206 MB | 39 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SPOTTERON Gmbh](https://appshunter.io/developer/1378099707) | [Jan Koen de Winter](https://appshunter.io/developer/6778581273) |

## What reviewers say

### COSEA

[App page](https://appshunter.io/ios/app/cosea/id6503368314)

Document marine environments, coastal habitats, and species. Report on pollution, infrastructure, and the blue economy. Contribute data and photos to a collaborative map to help scientists understand marine factors and foster a healthy relationship between humans and the sea.

**Highlights:** Observe marine environments, Document coastal habitats and species, Report on pollution and infrastructure, Add photos and data to a collaborative map, Interact with the user community, Build an environment notebook

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

**In-app purchases:** none


### Adage

[App page](https://appshunter.io/ios/app/adage/id6778581271)

**In-app purchases:** none


## Frequently asked questions

### Is COSEA free?

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

### Is Adage free?

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

### Do COSEA or Adage have ads?

Neither COSEA nor Adage shows ads.

### Which is updated more often, COSEA or Adage?

COSEA ships an update every 5 weeks, and Adage every 2 months. Most recently, COSEA was updated on October 7, 2026 and Adage on October 6, 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.*