SeaPhoto vs Jellywatch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SeaPhoto
Explore a vast collection of high-quality images and detailed ecological information about marine life in the Monterey Bay National Marine Sanctuary. Browse species by name or functional group, with photos downloaded on demand and stored for offline access.
- 1,650+ high-quality marine life images
- 631+ species with ecological information
- Browse by common/scientific name
- Filter by functional group
- On-demand photo download
- Offline photo storage
- Share photos via Twitter/email
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This application provides access to over 1,650 high quality images of over 631 species of marine life of the Monterey Bay National Marine Sanctuary, including over 130 species with detailed ecological information. You can browse by common or scientific name within all species at once, or by large functional group (birds, marine mammals, fishes, invertebrates, and algae). This app is lightweight and can be downloaded over a cellular connection. Each photo is downloaded “on demand” over a cellular connection, and subsequently become permanently stored on your iOS device for immediate access in the future. You can even share your favorite photos through Twitter and email. One of our nation’s most spectacular marine protected areas, the Monterey Bay National Marine Sanctuary is filled with an amazing array of wildlife – from tiny shrimp to giant blue whales. Stretching along the central coast from San Francisco to Cambria, the sanctuary includes pristine beaches, jewel-like tide pools, lush kelp forests, steep canyons and an offshore seamount hosting 34 species of marine mammals, more than 100 species of seabirds and shorebirds, more than 400 species of fish and countless invertebrates and algae. We invite you to explore and help protect this national undersea treasure.
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.
Screenshots
Verdict
The clearest difference is rating: SeaPhoto at 5.0 against Jellywatch's 3.0. SeaPhoto also leads on review sentiment (100% vs 91%) and iOS requirement (8.0 vs 14.0). Jellywatch's advantage is update cadence (every 3 months vs every 22 months). On price, ratings volume, ads and in-app purchases 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.
SeaPhoto holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 100% of SeaPhoto's written reviews are positive against 91% of Jellywatch's.
SeaPhoto ships an update every 22 months, Jellywatch every 3 months. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.
| Parameter | SeaPhoto | Jellywatch |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 90.9% of reviews |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 22 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 54 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Monterey Bay Marine Sanctuary Foundation | Monterey Bay Aquarium Research Institute |
Customer experience
SeaPhoto
Jellywatch
In-app purchases
SeaPhoto
No in-app purchases
Jellywatch
No in-app purchases








