Comparison

Phyto vs Gaiaxus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Phyto

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
Read full description

Phyto helps you learn to identify phytoplankton and their proper pronunciation. It includes the most common marine and freshwater phytoplankton. --------------------- Phyto Version 2.0 - Completely redesigned! --------------------- - Many new species added with more details and photos. - Freshwater and Marine species now included - Flash Cards and Fast Phyto: two games to help learn how to identify phytoplankton - Species Identification Guide - Phytoplankton Monitoring Network volunteers can submit sample observation results - Embedded news and information browser - Universal App: now works well on both the iPhone and iPad (support for all screen sizes and resolutions) ----------------- This application was developed by the Phytoplankton Monitoring Network which is sponsored by the Center for Coastal Environmental Health and Biomolecular Research division of the U.S. National Oceanic and Atmospheric Administration (NOAA).

About

Gaiaxus

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
Read full description

The GaiaXus mobile app is a powerful tool for water quality monitoring, designed to engage students and citizen scientists in hands-on environmental education. Paired with the Proteus sensor, the app captures key water quality data like temperature, turbidity, salinity, depth, chlorophyll, and pH, providing a user-friendly platform for field data collection, viewing, and interactive learning through educator-designed “Labs.” While tailored for K-12 students, the app also scales for citizen scientists and researchers, enriching environmental literacy and STEM skills by combining real-world data with collaborative, problem-solving activities.

Screenshots

Phyto4 screens
Gaiaxus4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Phyto versus Gaiaxus: the parameters behind the verdict, then further details
ParameterPhytoGaiaxus
PriceFreeFree
Rating4.8 (6 ratings)5.0 (1 ratings) — better
Positive reviews64.3% of reviews—
Number of ratings6 — better1
Update frequencyEvery 10 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size81 MB75 MB
Age rating4+4+
DeveloperGano Technologies LLCGaiaXus LLC

Customer experience

Phyto

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews14 reviews
Positive64.3%
Neutral7.1%
Negative28.6%

Gaiaxus

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Phyto

No in-app purchases

None

Gaiaxus

No in-app purchases

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.

Other comparisons