Honestly, since I can see the source code and confirm that it isn’t sending my data anywhere, I think it’s ok, even if it doesn’t meet the standard definition of foss. The keyboard is also pretty dang good, but I have two complaints. 1. I want to be able to resize the height of the keyboard. 2. The swipe typing sucks. As soon as those two things get fixed it’s easily the best keyboard on Android for me.