# Adopt vs Coastal Observer | SPOTTERON

The clearest difference is update cadence: Coastal Observer | SPOTTERON at every 4 months against Adopt's every 40 months. Coastal Observer | SPOTTERON also leads on ratings volume (10 vs 1) and iOS requirement (12.0 vs 17.5). Adopt's advantage is rating (5.0 vs 4.7). On price, review sentiment, 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.

Adopt holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Coastal Observer | SPOTTERON has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Adopt ships an update every 40 months, Coastal Observer | SPOTTERON every 4 months. The most recent releases landed on June 1, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Adopt | Coastal Observer | SPOTTERON |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/adopt-a-float/id1473875623/reviews)** | [4.7 (10 ratings)](https://appshunter.io/ios/app/coastal-observer-spotteron/id1475663669/reviews) |
| Number of ratings | 1 | **10** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 1 MB | 62 MB |
| Requires iOS | 17.5 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Frederik Simons](https://appshunter.io/developer/1687712314) | [SPOTTERON Gmbh](https://appshunter.io/developer/1378099707) |

## What reviewers say

### Adopt

[App page](https://appshunter.io/ios/app/adopt-a-float/id1473875623)

Access real-time data from autonomous oceanographic floats that record seismic activity. View instrument locations, trajectories, and health parameters. This app provides a low-cost method for oceanic data collection.

**Highlights:** View MERMAID instrument locations, Access recent trajectories, Obtain ocean depth information, View instrumental metadata, Identify instruments by name and institution

**Features:** macOS Compatibility

**In-app purchases:** none


### Coastal Observer | SPOTTERON

[App page](https://appshunter.io/ios/app/coastal-observer-spotteron/id1475663669)

This app empowers citizens to monitor local weather and water conditions, contributing to climate change research. Users can document environmental observations, weather impacts, water levels, and water quality to help build a sustainable future.

**Highlights:** Environmental observations, Weather documentation, Water level measurement, Water quality monitoring, Photo documentation, Educational curriculum integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Adopt free?

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

### Is Coastal Observer | SPOTTERON free?

Coastal Observer | SPOTTERON is free to download, with no in-app purchases.

### Which has better reviews, Adopt or Coastal Observer | SPOTTERON?

Adopt is rated higher. Adopt averages 5.0 out of 5 from 1 ratings, while Coastal Observer | SPOTTERON averages 4.7 from 10 ratings.

### Do Adopt or Coastal Observer | SPOTTERON have ads?

Neither Adopt nor Coastal Observer | SPOTTERON shows ads.

### Which is updated more often, Adopt or Coastal Observer | SPOTTERON?

Adopt ships an update every 40 months, and Coastal Observer | SPOTTERON every 4 months. Most recently, Adopt was updated on June 1, 2026 and Coastal Observer | SPOTTERON on September 25, 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.*