There was an issue with Zen about a year ago, it used to send Mozilla telemetry requests, and the developers had ignored any complaints on it. Anyone knows if the situation has changed since?
I found nothing on how private Helium is. People usually just say it is garbage because of the engine, but that’s not what I care about.
Since my computer is having some memory issues, I keep an eye out for it. Watching a YouTube video in Firefox took around 700 mb, opened it in Zen browser and it took >1 gb. Zen overall doesn’t seem very responsive.