HydroCrowd vs Hurd
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HydroCrowd
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HydroCrowd is a research project of the Justus Liebig University Giessen, which investigates the potential of participatory monitoring to increase the availability of hydro-climatic data for sustainable water management, especially in remote areas in the global south. The project will test different approaches to engage volunteers through the implementation and evaluation of a participatory hydro-climatic monitoring program in selected mountain regions in Ecuador, Honduras and Tanzania. Furthermore, it will demonstrate how the data collected by the volunteers can be used in hydrological modelling and, therefore, improve the prediction of climate change impact on water resources in data-scarce regions. The project outputs can be used to guide the development of future participatory monitoring programs and stimulate upscaling of the approach to other regions to address the lack of hydro-climatic data for evidence-based decision making and sustainable water management. Volunteers participate by reporting measurements from easy-to-use instruments at weather and water stations installed in the project areas in Ecuador, Honduras and Tanzania. These measurements include rainfall, air temperature and humidity, as well as the water level and turbidity of rivers and streams. To evaluate the quality of the data, the data will be compared with automated reference measurements at selected sites. These are then systematically examined and tested for their suitability for modeling. This app enables easy submission of data by the volunteers and provides instructions on how to collect data. Furthermore, users can view the data previously submitted by other volunteers. As the remote study areas have limited network access, it is recommended to download the map of your region and the locations of the stations before going to any of the HydroCrowd stations. In addition to reporting measurements from the HydroCrowd stations, volunteers also have the opportunity to create spots to record their own rainfall data, and to report weather events using ‘photo notes’. The HydroCrowd Citizen Science App is running on the SPOTTERON Platform.
Hurd
This app helps you drive positive change in your workplace by providing practical tips, inspiring stories, and a community of like-minded individuals. It offers bite-sized lessons and tools to address climate and social issues at work, making it easier to make an impact regardless of your role or industry.
- Peer-led action feed
- Bite-sized lessons and tools
- Industry insights
- Stories from changemakers
- Community of changemakers
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Making a difference at work, made easy. Feeling overwhelmed by climate change, inequality, or not knowing where to start? You're not alone. Lifestyle tweaks can feel too small, and driving change at work might seem too big. But wherever you are in your career – regardless of industry, role and seniority – you can make an impact. Hurd makes it easier to drive positive change from within your workplace. We bring together practical tips, inspiring stories, and a community of like-minded changemakers. What you’ll find inside Hurd: • A vibrant feed of peer led action, ideas, and inspiration • Bite-sized lessons and tools to act on climate and social issues at work • Industry insights on who's stepping up and how • Stories from real people making a difference across industries Why Hurd? Because workplace action matters. Small steps, taken together, can lead to real change. Start today. Take action. Share your journey. Be the hero your workplace needs - with Hurd.
Screenshots
Verdict
The clearest difference is update cadence: Hurd at monthly against HydroCrowd's every 3 months. HydroCrowd's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HydroCrowd ships an update every 3 months, Hurd monthly. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.
| Parameter | HydroCrowd | Hurd |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 61 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | SPOTTERON Gmbh | Kite Insights Limited |
In-app purchases
HydroCrowd
No in-app purchases
Hurd
No in-app purchases









