What would make you trust an app with your deepest secrets?

We’re building Solous (Solous.net), a place to keep the things you don’t tell anyone. Before we launch, we want to get the trust part right.

So, honestly: what would it take for you to write something truly private in an app? End-to-end encryption? No account required? Knowing who’s behind it? Or is it something you’d never do?

Every answer helps, even “nothing would.”