Downloading InvivoStat 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. The program lies within Education Tools, more precisely Science Tools. The most popular version among the program users is 1.0. This free program was originally developed by InVivoStat. The default filename for the program's installer is InVivoStat.exe. We recommend checking the downloaded files with any free antivirus.
From the developer:
InVivoStat is a powerful, free to use, statistical software package which uses R as its statistics engine. It is designed specifically for scientists conducting animal experiments. The package combines complex and powerful statistical tools (within R) with a user interface that is both easy to use and intuitive to the non-statistician.
You may want to check out more software, such as Wintree, f x -Viewer or World Geography Tutor, which might be related to InvivoStat.