WaterQuality vs EDC Hub
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WaterQuality
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.
- Record stream study data
- Learn about water quality indicators
- Offline functionality
- Macroinvertebrate field guide
- Data export (print/email)
- Site location recording
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The Water Quality Mobile App is designed for education or scientific research purposes. There are NO annoying advertisements. Users of all ages can record stream study data and learn about water quality indicators in learning pop-ups. Data can be recorded in a general or a Leaf Pack Network report. Stream study parameters include site location (lat. & long.), site profile information, water chemistries, physical stream data, aquatic macroinvertebrates, and much more! The macroinvertebrates section acts as a field guide of all of the major taxa used to calculate a pollution tolerance index. Pictures, sketches, short videos, and descriptions for identification are included for twenty-two macroinvertebrates. This app can be used in the field without WiFi or cell service. Once back to a WiFi or cell service area data can be exported as printed reports or emailed.
EDC Hub
Connect with a global community of researchers, designers, and activists focused on ecological futures. Share ideas, resources, and images, join or create interest groups, and participate in collaborative projects. The app facilitates discussions and showcases innovative ecological design.
- Share news, resources, and ideas
- Connect with community members
- Join or create interest groups
- Participate in collective events
- Discussion forums
- Collaborative work tools
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With roots in Baltimore and relations around the world, we’re building a place for researchers, designers, activists, artists, and others to conceive and develop alternative ecological futures. The EDC Hub will allow you to participate in the EDC community through a dedicated mobile app: --Share news, resources, images and ideas about ecology and design --Connect with other members and participate in collective events --Join groups for issues that interest you, or start one of your own --Our mobile hub includes a discussion forum for specific topics --Our blog is a place to share stories of projects and happenings --Take advantage of our tools for collaborative work and imagination
Screenshots
Verdict
The clearest difference is price: EDC Hub at Free against WaterQuality's $4.99. WaterQuality's advantage is iOS requirement (11.0 vs 13.0). On rating, ratings volume, update cadence and ads 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
EDC Hub 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 EDC Hub. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on October 29, 2026 and October 13, 2026 respectively.
| Parameter | WaterQuality | EDC Hub |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 5 months | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 96 MB | 26 MB |
| Age rating | 4+ | 12+ |
| Developer | Stroud Water Research Center | Inquiring Systems, Inc |
Customer experience
WaterQuality
EDC Hub
In-app purchases
WaterQuality
No in-app purchases
EDC Hub
No in-app purchases
Questions
Is WaterQuality free?
Is EDC Hub free?
Which has better reviews, WaterQuality or EDC Hub?
Do WaterQuality or EDC Hub have ads?
Which is updated more often, WaterQuality or EDC Hub?
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