Jellywatch vs STC Turtle Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Jellywatch
This app serves as a global database for monitoring ocean conditions, focusing on jellyfish populations. It empowers citizen scientists to submit observations and photos, contributing to freely accessible data on blooms, red tides, and general marine environments. Species identification is also offered for submitted images.
- Ocean condition monitoring
- Jellyfish population tracking
- Citizen science reporting
- Global data submission
- Species identification
- Free data access
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Jellywatch is a database for monitoring ocean conditions, especially jellyfish populations. Citizen scientists are encouraged to submit reports from around the world. The data will be freely available to download or browse. Report jellyfish blooms, red tides, and even clean “normal” conditions you observe. If you submit a photo, we can identify the species for you as well.
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: Jellywatch at none against STC Turtle Tracker's 2. Jellywatch also leads on rating (5.0 vs 4.7). STC Turtle Tracker's advantage is ratings volume (42 vs 1). On price, review sentiment, update cadence and ads 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. Jellywatch asks for nothing beyond the download.
Jellywatch holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: STC Turtle Tracker has 42 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 91% of Jellywatch's written reviews are positive against 88% of STC Turtle Tracker's.
Jellywatch ships an update every 3 months, STC Turtle Tracker every 2 months. The most recent releases landed on June 1, 2026 and September 9, 2026 respectively.
| Parameter | Jellywatch | STC Turtle Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.7 (42 ratings) |
| Positive reviews | 90.9% of reviews — better | 87.5% of reviews |
| Number of ratings | 1 | 42 — better |
| Update frequency | Every 3 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 | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 6 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Monterey Bay Aquarium Research Institute | SEA TURTLE CONSERVANCY, INC. |
Customer experience
Jellywatch
STC Turtle Tracker
In-app purchases
Jellywatch
No in-app purchases
STC Turtle Tracker
- STC Turtle Tracker Premium$2.991 Month
- STC Turtle Tracker Premium$24.991 Year
Questions
Is Jellywatch free?
Is STC Turtle Tracker free?
Which has better reviews, Jellywatch or STC Turtle Tracker?
Do Jellywatch or STC Turtle Tracker have ads?
Which is updated more often, Jellywatch or STC Turtle Tracker?
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