# Phyto vs Gaiaxus

The clearest difference is update cadence: Gaiaxus at every 2 months against Phyto's every 10 months. Gaiaxus also leads on rating (5.0 vs 4.8). Phyto's advantage is ratings volume (6 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Gaiaxus holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Phyto has 6 ratings behind it against 1, so its average is the more settled of the two.

Phyto ships an update every 10 months, Gaiaxus every 2 months. The most recent releases landed on September 21, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Phyto | Gaiaxus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (6 ratings)](https://appshunter.io/ios/app/phyto/id333237649/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gaiaxus/id6748620502/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 81 MB | 75 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gano Technologies LLC](https://appshunter.io/developer/333237652) | [GaiaXus LLC](https://appshunter.io/developer/1826606292) |

## 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


### Gaiaxus

[App page](https://appshunter.io/ios/app/gaiaxus/id6748620502)

This app enables users to monitor water quality using a connected sensor, collecting data on temperature, turbidity, salinity, and more. It offers interactive learning modules for environmental education, suitable for students and citizen scientists.

**Highlights:** Real-time water quality data collection, Temperature, turbidity, salinity, pH, chlorophyll monitoring, Interactive educator-designed learning modules, Field data collection and viewing, Supports K-12 students, citizen scientists, and researchers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Phyto free?

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

### Is Gaiaxus free?

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

### Which has better reviews, Phyto or Gaiaxus?

Gaiaxus is rated higher. Phyto averages 4.8 out of 5 from 6 ratings, while Gaiaxus averages 5.0 from 1 ratings.

### Do Phyto or Gaiaxus have ads?

Neither Phyto nor Gaiaxus shows ads.

### Which is updated more often, Phyto or Gaiaxus?

Phyto ships an update every 10 months, and Gaiaxus every 2 months. Most recently, Phyto was updated on September 21, 2026 and Gaiaxus on June 1, 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.*