Coastal Observer | SPOTTERON vs STC Turtle Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Coastal Observer | SPOTTERON
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.
- Environmental observations
- Weather documentation
- Water level measurement
- Water quality monitoring
- Photo documentation
- Educational curriculum integration
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Climate change will impact where and how humans live. As tides rise and storms intensify, humans will be forced to adapt to the changing environment and increase resiliency by learning more about local impacts of rising tides and intensified storms. The Coastal Observer App encourages citizens to become active in monitoring weather and water locally, and will help researchers build a pathway for a sustainable future. The citizen scientists may choose from 4 activities: 1) basic environmental observations by sharing how the current setting makes you feel. 2) weather observations to document the current weather and its impacts. 3) water level to document where the water levels are and how this might impact infrastructure, life, or property. 4) water quality to document how our environment is impacted by human practices. Observing Weather Events Weather events can have devastating effects on local communities. Using this application, the observer can make note of stormy conditions and its associated affects. This information will be documented through photographs and user documentation. Measuring Water Level If there is an installed and fixed water level gauge near you, feel free to use that gauge to enter your water level. For help locating existing gauges, please visit this link. If there are no installed, fixed gauges, you can report a value from a nearby automated gauge at the time of your observation, or simply take a picture to document the water level visually. NOTE - Never attempt to measure water levels during unsafe conditions or without proper training. Monitoring Water Quality Users may use a Secchi Disk to make manual observations of water clarity. For more information, visit the Secchi Disk Project at www.secchidisk.org Coastal Observer for Schools Schools can easily include the Coastal Observer App in their curriculum. Educators can utilize the app to teach reading water levels or using a Secchi Disk to increase environmental awareness in students, while also providing the opportunity to express feelings about water and weather events. The project runs on the SPOTTERON Citizen Science platform for participatory research and awareness building.
STC Turtle Tracker
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.
- Real-time turtle tracking
- Individual turtle stories and histories
- Detailed migration route maps
- Updates on turtle movements
- Support conservation efforts
- Learn about ocean health
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Follow real sea turtles – Koa, Donna Shello, Haven, and dozens more – as they navigate thousands of miles across the world's oceans. Watch their journeys unfold in real time, learn their stories, and become part of the effort to protect them. The Turtle Tracker app connects you directly to sea turtles fitted with satellite transmitters by researchers and conservationists. These aren't simulations – they're real animals, tracked as they migrate between feeding grounds, traverse ocean currents, and return to nest on the beaches where they were born. Get to know each turtle Every turtle has a name, a history, and a journey worth following. See where they were released, how far they've traveled, and what they've been up to. Add your favorites and check in as their tracks grow across the map. Watch migrations unfold Explore detailed route maps showing each turtle's path from release to their latest ping. See the distances they cover – sometimes thousands of miles – and the speeds they maintain across the open ocean. Stay updated The home feed shows you which turtles moved recently, highlights the week's top travelers, and keeps you connected to what's happening in real time. Go Premium to support sea turtle conservation Upgrade to unlock leaderboards, exclusive features, and – most importantly – directly fund the research and protection efforts that keep these animals safe. Every subscription helps Sea Turtle Conservancy continue its work. Why it matters Sea turtles are among the oldest creatures on Earth and vital indicators of ocean health. Whether they thrive or vanish says something profound about our ability to share this planet with other species. Sea Turtle Conservancy, founded in 1959 by world-renowned naturalist Dr. Archie Carr, is the world's oldest sea turtle research and conservation organization. Your engagement — and your support — helps continue over six decades of work protecting these remarkable animals. Important links: https://conserveturtles.org/terms-of-use/ https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ https://conserveturtles.org/privacy-policy/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Coastal Observer | SPOTTERON | STC Turtle Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (10 ratings) — better | 4.7 (42 ratings) |
| Positive reviews | 100.0% of reviews — better | 87.5% of reviews |
| Number of ratings | 10 | 42 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 62 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | SPOTTERON Gmbh | SEA TURTLE CONSERVANCY, INC. |
Customer experience
Coastal Observer | SPOTTERON
STC Turtle Tracker
In-app purchases
Coastal Observer | SPOTTERON
No in-app purchases
STC Turtle Tracker
- STC Turtle Tracker Premium$2.991 Month
- STC Turtle Tracker Premium$24.991 Year
Questions
Is Coastal Observer | SPOTTERON free?
Is STC Turtle Tracker free?
Which has better reviews, Coastal Observer | SPOTTERON or STC Turtle Tracker?
Do Coastal Observer | SPOTTERON or STC Turtle Tracker have ads?
Which is updated more often, Coastal Observer | SPOTTERON or STC Turtle Tracker?
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