HydroCrowd vs EchoSoil
Price, ratings, monetisation and update history for both apps, side by side β 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 βphoto notesβ. The HydroCrowd Citizen Science App is running on the SPOTTERON Platform.
EchoSoil
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EchoSoil is the official mobile app of the ECHO project, a citizen science initiative co-funded by the European Union under the Horizon Europe programme. This app empowers individuals, communities, and researchers to monitor and protect soil health across Europe. EchoSoil enables users to: Collect and share soil data from their surroundings Upload photos and observations to the ECHOREPO open-access repository Learn about soil biodiversity and restoration Participate in a Europe-wide effort to promote soil stewardship The app is fully free to use and designed for educational, scientific, and environmental engagement purposes. All collected data contributes to a collaborative EU-wide initiative aimed at restoring and protecting soil ecosystems. Visit https://echosoil.eu for more information about the project and its impact.
Screenshots
Verdict
The clearest difference is update cadence: EchoSoil at every 5 weeks against HydroCrowd's every 3 months. HydroCrowd's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· 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, EchoSoil every 5 weeks. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.
| Parameter | HydroCrowd | EchoSoil |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 5 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 β better | 15.6 |
| Further details β not scored | ||
| Size | 61 MB | 95 MB |
| Age rating | 4+ | 4+ |
| Developer | SPOTTERON Gmbh | ANERIS - Minka |
In-app purchases
HydroCrowd
No in-app purchases
EchoSoil
No in-app purchases
Questions
Is HydroCrowd free?
Is EchoSoil free?
Do HydroCrowd or EchoSoil have ads?
Which is updated more often, HydroCrowd or EchoSoil?
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