The codalm R package implements the methods as described in A Transformation-free Linear Regression for Compositional Outcomes and Predictors (Fiksel, Zeger, and Datta, 2020)
You can install the current version of codalm for github using the remotes package.
View the vignette (https://jfiksel.github.io/codalm/articles/codalm_quickstart.html) for examples of how to use the codalm package