# Coastal Observer | SPOTTERON vs STC Turtle Tracker

The clearest difference is in-app purchases: Coastal Observer | SPOTTERON at none against STC Turtle Tracker's 2. Coastal Observer | SPOTTERON also leads on review sentiment (100% vs 88%) and iOS requirement (12.0 vs 15.1). STC Turtle Tracker's advantage is update cadence (every 2 months vs every 4 months) and ratings volume (42 vs 10). On price, rating, ads and device support there is nothing between them.

Both are free to download. STC Turtle Tracker sells 2 in-app purchases, starting at $2.99 per month. Coastal Observer | SPOTTERON asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Coastal Observer | SPOTTERON against 4.7 for STC Turtle Tracker. Both are backed by a comparable volume of ratings — 10 and 42 respectively. Written reviews are what separate them: 100% of Coastal Observer | SPOTTERON's written reviews are positive against 88% of STC Turtle Tracker's.

Coastal Observer | SPOTTERON ships an update every 4 months, STC Turtle Tracker every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Coastal Observer | SPOTTERON | STC Turtle Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (10 ratings)](https://appshunter.io/ios/app/coastal-observer-spotteron/id1475663669/reviews)** | [4.7 (42 ratings)](https://appshunter.io/ios/app/stc-turtle-tracker/id1591029453/reviews) |
| Number of ratings | 10 | **42** |
| Positive reviews | **100.0% of reviews** | 87.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 62 MB | 66 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SPOTTERON Gmbh](https://appshunter.io/developer/1378099707) | [SEA TURTLE CONSERVANCY, INC.](https://appshunter.io/developer/1591029455) |

## What reviewers say

### 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, Vision Pro support

**In-app purchases:** none


### STC Turtle Tracker

[App page](https://appshunter.io/ios/app/stc-turtle-tracker/id1591029453)

Follow the real-time journeys of tagged sea turtles as they migrate across oceans. Learn their individual stories and discover how your support helps protect these vital ocean indicators.

**Highlights:** Real-time turtle tracking, Individual turtle stories and histories, Detailed migration route maps, Updates on turtle movements, Support conservation efforts, Learn about ocean health

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STC Turtle Tracker Premium | $2.99 | per month |
| STC Turtle Tracker Premium | $24.99 | per year |


## Frequently asked questions

### Is Coastal Observer | SPOTTERON free?

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

### Is STC Turtle Tracker free?

STC Turtle Tracker is free to download, with in-app purchases available.

### Which has better reviews, Coastal Observer | SPOTTERON or STC Turtle Tracker?

Coastal Observer | SPOTTERON is rated higher. Coastal Observer | SPOTTERON averages 4.7 out of 5 from 10 ratings, while STC Turtle Tracker averages 4.7 from 42 ratings.

### Do Coastal Observer | SPOTTERON or STC Turtle Tracker have ads?

Neither Coastal Observer | SPOTTERON nor STC Turtle Tracker shows ads.

### Which is updated more often, Coastal Observer | SPOTTERON or STC Turtle Tracker?

Coastal Observer | SPOTTERON ships an update every 4 months, and STC Turtle Tracker every 2 months. Most recently, Coastal Observer | SPOTTERON was updated on October 24, 2026 and STC Turtle Tracker on October 24, 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.*