Altus is an Add-in for Microsoft Project that exposes additional functionality directly inside Microsoft Project that allows you to manage your tasks in Altus using Microsoft Project.
The add in currently requires local administrator rights to get automatic updates, Intune administrators currently need to package up new versions of the application manually for it to remain up to date.
The download for the application is publicly available https://docs.altus.pro/products/AltusForProject/index.html