# EyeOnWater vs First Grade Learning Adventure

The clearest difference is price: EyeOnWater at Free against First Grade Learning Adventure's $0.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

EyeOnWater is free to download; First Grade Learning Adventure costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | EyeOnWater | First Grade Learning Adventure |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/eyeonwater-colour/id1021542366/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 31 MB | 3 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MARIS B.V.](https://appshunter.io/developer/964066073) | [Kevin Fitzgerald](https://appshunter.io/developer/1883492044) |

## What reviewers say

### EyeOnWater

[App page](https://appshunter.io/ios/app/eyeonwater-colour/id1021542366)

Contribute to scientific research by measuring and reporting the color of nearby bodies of water. Your data helps scientists track water quality and life within it over time, building on a long-standing scientific observation method.

**Highlights:** Measure water color, Contribute to scientific research, Track water quality, Observe algae presence, Utilize Forel-Ule scale, View data on website

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

**In-app purchases:** none


### First Grade Learning Adventure

[App page](https://appshunter.io/ios/app/first-grade-learning-adventure/id6804420848)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EyeOnWater free?

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

### Is First Grade Learning Adventure free?

First Grade Learning Adventure costs $0.99, with no in-app purchases.

### Do EyeOnWater or First Grade Learning Adventure have ads?

Neither EyeOnWater nor First Grade Learning Adventure 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.*