I think to most people asking how this works, the answer is, you connect it to AllDebrid/RealDebrid paid accounts, and that’s the contents you stream. Hence it’s a streamer system for a paid service. I think this is the most important clarification needed here.

Well it uses Google services in android. Those can still communicate even if the app itself has no network permission. I guess for me the highest privacy designation would be to be FOSS, so people can verify it’s not doing anything funny on the back end.

For text to speech I’d recommend Kaldi. It’s just the android engine and has nothing else to configure/look at, but the quality of the output is really natural. FOSS, fully offline running locally.

Is this an offline self contained app?