It is true, but we don't use them and we will never use them. Howlr is build on the open-source Expo framework, it is an awesome tool to build complex apps and to deploy them easily. Expo comes with a very wide range of functionnaly, some of them include ad-related things, reporting tools, etc. You can see an exhaustive list of them in the Expo documentation
With the exception of Sentry (a bug reporting tool) we don't use any of them even though they are still packed within the app. The people at Expo are working on making it possible to remove them entirely (see this thread
) but in the meantime it's just dead code within Howlr that is never executed.