Downloading ACRU4 1.0 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. Commonly, this program's installer has the following filename: Acru4.exe. The program relates to Education Tools.
The actual developer of the free software is University of KwaZulu-Natal. This PC program is suitable for 32-bit versions of Windows 7/8/10/11. The most popular version among ACRU4 users is 1.0. We recommend checking the downloaded files with any free antivirus.
From the developer:
The ACRU (Agricultural Catchments Research Unit ) model has its hydrological origins in a distributed catchment evapotranspiration based study carried out in the Natal Drakensberg in the early 1970s (Schulze, 1975). ACRU4 was developed primarily as a teaching tool. It is made up of components that can be added/copied and pasted within a tree structure.
You may want to check out more software, such as MathMatic, MemBrain or roboBASIC, which might be related to ACRU4.