Go to your phone homescreen and look at the app dock (the bottom row that contains some apps and stays the same when you switch pages).
Which are yours? Any FOSS apps?
In my case, they are FDroid, Signal, Threema, Firefox and the defaul Samsung camera app. So, 80% FOSS…
I put all my apps on my home screen and I keep all non-FOSS apps in a single folder as a reminder to find replacements. The vast majority of my apps are FOSS at this point.
Very nice work! That’s a good idea.