This is an Open Source project, which allows you to access all the code that is used to build the app and perform the analysis.
We keep the code for this app in a Github repository. This allows folks to contribute, track work, and backtrack changes (if need be) without having to maintain everything ourselves. The repository is publically accessible so you don't need any permissions to access or download it.
If you plan on using the code itself, set up a github account.