I mean I won’t argue that paper isn’t safest in terms of privacy, because I would be wrong, but the app is open source and doesn’t store data outside of the phone so it should be the second safest way.
Though, I’m upset about Maya (I think initially it was called cycles or something like that) how it started similarly (although it wasn’t open source) and transformed into a piece of shit.
They also waive rights for class action lawsuits, one should also say to not agree with that.