# EyeOnWater vs LeafByte

The clearest difference is rating: LeafByte at 4.8 against EyeOnWater's 2.5. LeafByte also leads on ratings volume (13 vs 2) and iOS requirement (9.0 vs 14.0). EyeOnWater's advantage is update cadence (every 2 months vs every 5 months). 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.

LeafByte holds the better App Store score, 4.8 against 2.5. That said, the two scores are not equally well evidenced: LeafByte has 13 ratings behind it against 2, so its average is the more settled of the two.

EyeOnWater ships an update every 2 months, LeafByte every 5 months. The most recent releases landed on June 25, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | EyeOnWater | LeafByte |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (2 ratings)](https://appshunter.io/ios/app/eyeonwater-colour/id1021542366/reviews) | **[4.8 (13 ratings)](https://appshunter.io/ios/app/leafbyte/id1362985339/reviews)** |
| Number of ratings | 2 | **13** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 29 MB | 21 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maris B.V.](https://appshunter.io/developer/964066073) | [Abigail Getman-Pickering](https://appshunter.io/developer/1362985338) |

## 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

**In-app purchases:** none


### LeafByte

[App page](https://appshunter.io/ios/app/leafbyte/id1362985339)

This application allows users to quickly and accurately measure leaf area and herbivory by taking photos. It supports various leaf types and conditions, and saves data to spreadsheets. Features include freehand drawing for reconstruction and automatic skew correction.

**Highlights:** Measure leaf area and herbivory, Save data to spreadsheets, Analyze leaves of any size, Reconstruct missing leaf margins, Measure dark or light plant material, Read barcodes, Correct photo skew

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EyeOnWater free?

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

### Is LeafByte free?

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

### Which has better reviews, EyeOnWater or LeafByte?

LeafByte is rated higher. EyeOnWater averages 2.5 out of 5 from 2 ratings, while LeafByte averages 4.8 from 13 ratings.

### Do EyeOnWater or LeafByte have ads?

Neither EyeOnWater nor LeafByte shows ads.

### Which is updated more often, EyeOnWater or LeafByte?

EyeOnWater ships an update every 2 months, and LeafByte every 5 months. Most recently, EyeOnWater was updated on June 25, 2026 and LeafByte on September 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*