Comparison

Climate Change Explorer vs HydroCrowd

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Climate Change Explorer

Features
Read full description

At Historic Environment Scotland, understanding how changes in our climate are impacting our organisation is central to our climate action ambitions. Changes in our climate, such as the increasing frequency and intensity of extreme weather events, introduces a range of physical climate risks to our organisation. This includes risks to our people, the natural capital of our properties, our operations and our physical assets. There are further β€˜transition’ climate risks introduced as society takes actions and moves towards a low-carbon economy. Understanding these risks and impacts, and adapting to them, is a key deliverable of our Climate Action Plan with work currently underway. This app lets you explore Edinburgh, Scotland’s capital city and a UNESCO World Heritage site, and how climate change is impacting some of its historic sites. The app is based on a 3D model of the city created for the Scottish Ten project, which sought to accurately record Scotland’s World Heritage sites in 3D using cutting edge technologies, to help support their conservation, management, interpretation and virtual accessibility. FEEDBACK We're always looking for feedback so please send any ideas on how we can improve the app to digitaldocumentation@hes.scot or rate us in the app store.

About

HydroCrowd

Features
Read full description

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 β€˜photo notes’. The HydroCrowd Citizen Science App is running on the SPOTTERON Platform.

Screenshots

Climate Change Explorer4 screens
HydroCrowd4 screens

Verdict

The call

The clearest difference is update cadence: HydroCrowd at every 3 months against Climate Change Explorer's every 50 months. HydroCrowd also leads on iOS requirement (12.0 vs 15.0). 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Climate Change Explorer ships an update every 50 months, HydroCrowd every 3 months. Both last shipped on May 16, 2026.

Scorecard2 real differences Β· 4 level
Climate Change Explorer versus HydroCrowd: the parameters behind the verdict, then further details
ParameterClimate Change ExplorerHydroCrowd
PriceFreeFree
Update frequencyEvery 50 monthsEvery 3 months β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 β€” better
Further details β€” not scored
Size1017 MB61 MB
Age rating4+4+
DeveloperHistoric Environment ScotlandSPOTTERON GmbH

In-app purchases

None

Climate Change Explorer

No in-app purchases

None

HydroCrowd

No in-app purchases

Questions

Is Climate Change Explorer free?
Climate Change Explorer is free to download, with no in-app purchases.
Is HydroCrowd free?
HydroCrowd is free to download, with no in-app purchases.
Do Climate Change Explorer or HydroCrowd have ads?
Neither Climate Change Explorer nor HydroCrowd shows ads.
Which is updated more often, Climate Change Explorer or HydroCrowd?
Climate Change Explorer ships an update every 50 months, and HydroCrowd every 3 months. Most recently, Climate Change Explorer was updated on May 16, 2026 and HydroCrowd on May 16, 2026.

Other comparisons