Aha, I see, you can consider it whatever you want, maybe the “not fully free software” would be a better term, but “not open source” is too harsh, because source is open, as you can see it, but doesn’t fit the definition of Free Software as defined by FSF. If you use requirements by FSF, please use their terminology as well, it’s confusing.

Also please contact FSF, because they recommend this non-free app on their website: https://directory.fsf.org/wiki/Collection:Replicant-expanded#Navigation