# WaterQuality vs HabiTally

WaterQuality and HabiTally both sit at 5.0 stars, but that hides the real split: 100% of HabiTally's written reviews are positive against 0% of WaterQuality's. HabiTally also leads on price (Free vs $4.99). WaterQuality's advantage is update cadence (every 5 months vs every 43 months) and iOS requirement (11.0 vs 15.6). On rating, ratings volume, ads and in-app purchases there is nothing between them.

HabiTally is free to download; WaterQuality costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for WaterQuality against 5.0 for HabiTally. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews are what separate them: 0% of WaterQuality's written reviews are positive against 100% of HabiTally's.

WaterQuality ships an update every 5 months, HabiTally every 43 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | WaterQuality | HabiTally |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/waterquality/id569193509/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/habitally/id1464056499/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 43 months |
| Monetization | Paid | **Free** |
| Size | 96 MB | 68 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stroud Water Research Center](https://appshunter.io/developer/1200990268) | [Iowa State University of Science and Technology](https://appshunter.io/developer/433925044) |

## What reviewers say

### WaterQuality

[App page](https://appshunter.io/ios/app/waterquality/id569193509)

This educational app allows users of all ages to record stream study data and learn about water quality indicators. It functions offline and includes a field guide for identifying aquatic macroinvertebrates to assess pollution tolerance. Data can be exported for scientific research or educational purposes.

**Highlights:** Record stream study data, Learn about water quality indicators, Offline functionality, Macroinvertebrate field guide, Data export (print/email), Site location recording

**Features:** Vision Pro support

**In-app purchases:** none


### HabiTally

[App page](https://appshunter.io/ios/app/habitally/id1464056499)

This app allows users to record data about their monarch butterfly habitat conservation efforts. The collected, anonymized data is shared with conservation groups to help monarch populations recover.

**Highlights:** Record habitat conservation data, Support monarch butterfly recovery, Anonymized data aggregation, Data shared with conservation parties, Citizen science for wildlife

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is WaterQuality free?

WaterQuality costs $4.99, with no in-app purchases.

### Is HabiTally free?

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

### Which has better reviews, WaterQuality or HabiTally?

WaterQuality and HabiTally are both rated 5.0 out of 5 on the App Store, from 2 and 5 ratings respectively.

### Do WaterQuality or HabiTally have ads?

Neither WaterQuality nor HabiTally shows ads.

### Which is updated more often, WaterQuality or HabiTally?

WaterQuality ships an update every 5 months, and HabiTally every 43 months. Most recently, WaterQuality was updated on November 1, 2026 and HabiTally on November 3, 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.*