# Phyto vs CERF 2025

The clearest difference is iOS requirement: CERF 2025 at 13.4 against Phyto's 15.0. 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.

## The numbers

| Metric | Phyto | CERF 2025 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/phyto/id333237649/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Monetization | Free | — |
| Size | 81 MB | 48 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Gano Technologies LLC](https://appshunter.io/developer/333237652) | [Coastal and Estuarine Research Federation](https://appshunter.io/developer/1712168847) |

## What reviewers say

### Phyto

[App page](https://appshunter.io/ios/app/phyto/id333237649)

Learn to identify common marine and freshwater phytoplankton with this educational app. It features a comprehensive identification guide, flashcards, and interactive games to aid learning. Developed with support from NOAA, it's designed for both iPhone and iPad.

**Highlights:** Phytoplankton identification guide, Marine and freshwater species, Flash cards for learning, Interactive identification games, Species details and photos, Submit observation results

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

**In-app purchases:** none


### CERF 2025

[App page](https://appshunter.io/ios/app/cerf-2025/id6753875139)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Phyto free?

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

### Is CERF 2025 free?

CERF 2025 is free to download, with no in-app purchases.

### Do Phyto or CERF 2025 have ads?

Neither Phyto nor CERF 2025 shows ads.

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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.*