Comparison

Serengeti Tracker vs HydroCrowd

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

Head to head
About

Serengeti Tracker

This app aids visitors in identifying and tracking wildlife in Serengeti National Park. Users can learn facts about animals, share sightings, and view the locations of tagged wildebeest, eland, and zebra. Your contributions help scientists conserve wildlife.

Highlights
  • Identify and track wildlife
  • Learn animal facts
  • Share sightings and locations
  • View tagged animal movements
  • Contribute to conservation data
Features
Read full description

Welcome to the Serengeti Tracker project. This exciting project lead by scientists at Glasgow University is helping to collect valuable data on some of Africa's most iconic wildlife, in one of its flagship reserves - Serengeti National Park. If you are planning a trip to Serengeti National Park then this app will be invaluable in helping you to identify and track down different animals in the park and find out interesting facts about them. In addition, you will be able to share news, images and the locations of animals you spot with other people; all whilst helping scientists to better understand and conserve them. Using the app you are also able to see where radio collar tagged wildebeest, Eland and zebra are within the park (and where they've been in the last 30 days).

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 ‘photo notes’. The HydroCrowd Citizen Science App is running on the SPOTTERON Platform.

Screenshots

Serengeti Tracker4 screens
HydroCrowd4 screens

Verdict

The call

The clearest difference is update cadence: HydroCrowd at every 3 months against Serengeti Tracker's every 11 months. 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Serengeti Tracker ships an update every 11 months, HydroCrowd every 3 months. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

Scorecard1 real difference · 8 level
Serengeti Tracker versus HydroCrowd: the parameters behind the verdict, then further details
ParameterSerengeti TrackerHydroCrowd
PriceFreeFree
Rating3.8 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 11 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size131 MB61 MB
Age rating4+4+
DeveloperNatural ApptitudeSPOTTERON Gmbh

In-app purchases

None

Serengeti Tracker

No in-app purchases

None

HydroCrowd

No in-app purchases

Questions

Is Serengeti Tracker free?
Serengeti Tracker is free to download, with no in-app purchases.
Is HydroCrowd free?
HydroCrowd is free to download, with no in-app purchases.
Do Serengeti Tracker or HydroCrowd have ads?
Neither Serengeti Tracker nor HydroCrowd shows ads.
Which is updated more often, Serengeti Tracker or HydroCrowd?
Serengeti Tracker ships an update every 11 months, and HydroCrowd every 3 months. Most recently, Serengeti Tracker was updated on October 15, 2026 and HydroCrowd on October 14, 2026.

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