# ObsEnMer vs GÉO3E

The clearest difference is iOS requirement: GÉO3E at 12.1 against ObsEnMer's 14.0. 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.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ObsEnMer | GÉO3E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/obsenmer/id1162065009/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free | — |
| Size | 185 MB | 61 MB |
| Requires iOS | 14.0 | **12.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Altitude Cherbourg](https://appshunter.io/developer/512464175) | [e-Conception](https://appshunter.io/developer/883300086) |

## What reviewers say

### ObsEnMer

[App page](https://appshunter.io/ios/app/obsenmer/id1162065009)

Report marine animal sightings with this app. It's designed for boaters, professionals, and associations to contribute to citizen science programs. Help researchers understand marine life and climate change impacts.

**Highlights:** Report marine animal observations, Two involvement levels for boaters, Expert level for trained contributors, Species identification guide, Observation history, Species identification quizzes, Share observations on social media

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

**In-app purchases:** none


### GÉO3E

[App page](https://appshunter.io/ios/app/geo3e/id1606892008)

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

**In-app purchases:** none


## Frequently asked questions

### Is ObsEnMer free?

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

### Is GÉO3E free?

GÉO3E is free to download, with no in-app purchases.

### Do ObsEnMer or GÉO3E have ads?

Neither ObsEnMer nor GÉO3E shows ads.

### Which is updated more often, ObsEnMer or GÉO3E?

ObsEnMer ships an update every 4 months, and GÉO3E every 4 months. Most recently, ObsEnMer was updated on October 4, 2026 and GÉO3E on October 3, 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.*