# Jellywatch vs Chrysm Student

The clearest difference is update cadence: Chrysm Student at weekly against Jellywatch's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Jellywatch ships an update every 3 months, Chrysm Student weekly. The most recent releases landed on October 22, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Jellywatch | Chrysm Student |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/jellywatch/id545501733/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 90.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | — |
| Size | 6 MB | 22 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Monterey Bay Aquarium Research Institute](https://appshunter.io/developer/997448509) | [The Chrysm Institute of Esthetics](https://appshunter.io/developer/1428926885) |

## What reviewers say

### 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


### Chrysm Student

[App page](https://appshunter.io/ios/app/chrysm-student/id6759968449)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Jellywatch free?

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

### Is Chrysm Student free?

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

### Do Jellywatch or Chrysm Student have ads?

Neither Jellywatch nor Chrysm Student shows ads.

### Which is updated more often, Jellywatch or Chrysm Student?

Jellywatch ships an update every 3 months, and Chrysm Student weekly. Most recently, Jellywatch was updated on October 22, 2026 and Chrysm Student on October 5, 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.*