# SeaPhoto vs Jellywatch

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.

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.

## The numbers

| Metric | SeaPhoto | Jellywatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/seaphoto/id515571588/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/jellywatch/id545501733/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | **100.0% of reviews** | 90.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 54 MB | 6 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Monterey Bay Marine Sanctuary Foundation](https://appshunter.io/developer/515571591) | [Monterey Bay Aquarium Research Institute](https://appshunter.io/developer/997448509) |

## What reviewers say

### SeaPhoto

[App page](https://appshunter.io/ios/app/seaphoto/id515571588)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Jellywatch

[App page](https://appshunter.io/ios/app/jellywatch/id545501733)

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.

**Highlights:** Ocean condition monitoring, Jellyfish population tracking, Citizen science reporting, Global data submission, Species identification, Free data access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SeaPhoto free?

SeaPhoto is free to download, with no in-app purchases.

### Is Jellywatch free?

Jellywatch is free to download, with no in-app purchases.

### Which has better reviews, SeaPhoto or Jellywatch?

SeaPhoto is rated higher. SeaPhoto averages 5.0 out of 5 from 3 ratings, while Jellywatch averages 3.0 from 2 ratings.

### Do SeaPhoto or Jellywatch have ads?

Neither SeaPhoto nor Jellywatch shows ads.

### Which is updated more often, SeaPhoto or Jellywatch?

SeaPhoto ships an update every 22 months, and Jellywatch every 3 months. Most recently, SeaPhoto was updated on October 23, 2026 and Jellywatch on October 22, 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.*