I started from here
which has a link to this page to set up the environment
And in that page it says to use the integration branch...
Actually, the branding I did was just changing the icons and splash screens in the /resources folder, a bit of SCSS changes, fixing the URL to login only to a specific site.
So maybe it's worth saying to clone the master branch to make a "production-ready" custom app.
Once I have the whole thing neatly working, I would like to share the steps I did to ease the process for other developers: I am writing down an .MD documento with the steps to follow on a "main" linux box (for android .aab bundle app) followed by a "migration" on a mac to create the iOS app.
Do you think it is worth?