Sealife Tracker vs Sea Watcher
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sealife Tracker
This app collects data on marine species along the UK coastline, focusing on invasive and climate change indicator species. It's a collaborative project involving several environmental organizations and diving clubs.
- Marine species data collection
- UK coastline focus
- Invasive species tracking
- Climate change indicator species
- Environmental partnership project
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The Sealife Tracker project aims to collect much needed data on both invasive and climate change indicator marine species around the UK coastline. It is a unique partnership between the British Sub Aqua Club, the Marine Biological Association, the Environment Agency, Scottish Natural Heritage, The Scottish Environment Protection Agency and Natural Apptitude.
Sea Watcher
Log sightings of marine megafauna like whales, dolphins, and seals across UK and European waters. Identify species, record valuable data, and contribute to scientific understanding of marine life. Review your past sightings and see what others have observed.
- Log marine megafauna sightings
- Identify whales, dolphins, seals, and more
- Record sighting location and time
- Contribute to marine species research
- View past and recent sightings
- Learn about marine species
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Welcome to the Sea Watcher app! Here you can log your sightings of whales, dolphins, seals and other megafauna (basking sharks, ocean sunfish and sea turtles) anywhere in the UK and European waters. Whether walking along the coast path, watching from a clifftop or spotting from a boat, the Sea Watcher app will help you identify what you saw and record all the information that will be useful to help us understand more about all these marine species in the UK and European waters! The information you collect will be used to understand which species are seen where and when, and to highlight changes over time. It is also important to record when you are looking out for marine wildlife but don’t see any. You will be able to revisit your sightings as well as find out what others have seen around the British Isles in the last week, month or year. We hope you enjoy using this app and that it helps you to become a confident and regular Sea Watcher!
Screenshots
Verdict
The clearest difference is review sentiment: Sea Watcher at 100% against Sealife Tracker's 33%. Sea Watcher also leads on update cadence (every 6 weeks vs every 18 months). Sealife Tracker's advantage is iOS requirement (8.0 vs 13.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Sealife Tracker ships an update every 18 months, Sea Watcher every 6 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Sealife Tracker | Sea Watcher |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 — better | — |
| Update frequency | Every 18 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 37 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Natural Apptitude | Sea Watch Foundation - The Cetacean Monitoring Unit |
Customer experience
Sealife Tracker
Sea Watcher
In-app purchases
Sealife Tracker
No in-app purchases
Sea Watcher
No in-app purchases
Questions
Is Sealife Tracker free?
Is Sea Watcher free?
Do Sealife Tracker or Sea Watcher have ads?
Which is updated more often, Sealife Tracker or Sea Watcher?
Other comparisons
