# MARINElife vs COSEA

The clearest difference is update cadence: MARINElife at daily against COSEA's every 5 weeks. COSEA's advantage is iOS requirement (12.0 vs 15.5). 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.

MARINElife ships an update daily, COSEA every 5 weeks. The most recent releases landed on May 16, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | MARINElife | COSEA |
| --- | --- | --- |
| 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 | **Daily** | Every 5 weeks |
| Monetization | — | Free |
| Size | 7 MB | 206 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Allsopp](https://appshunter.io/developer/963932791) | [SPOTTERON Gmbh](https://appshunter.io/developer/1378099707) |

## What reviewers say

### MARINElife

[App page](https://appshunter.io/ios/app/marinelife/id1629446289)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is MARINElife free?

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

### Is COSEA free?

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

### Do MARINElife or COSEA have ads?

Neither MARINElife nor COSEA shows ads.

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

MARINElife ships an update daily, and COSEA every 5 weeks. Most recently, MARINElife was updated on May 16, 2026 and COSEA on August 14, 2026.

---

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