I don’t know what criteria requires iOS devs to display this, but comparing the two privacy disclaimers; Zen Notes may look at user content and Obsidian doesn’t.

I've had my eye on zen notes, but haven't tried it. A couple of questions:

1. Why not use Obsidian?
2. What Obsidian capabilities do you need to replace?

I have no idea, as you've not linked to any information at all about it. What's wrong with Obsidian?

i have tried it, i guess it does the job, altough i don't like the gui that much compared with obsidian. but that's a matter of taste i guess. i'll keep using obsidian for now i think.