[kadoban]

> My possibly-very-flawed layman's view of the legal system is that it's on the prosecutor to prove that you did something wrong.

It is, but practically there's some big issues with that. Including:

The police can investigate, including in ways that are going to be very uncomfortable, costly and annoying for you. This app will definitely be used as evidence.

Some of the anti-abortion laws are being written as allowing people to sue you. That shifts the burden of proof away from "beyond a reasonable doubt" to something much easier.

If you do get charged with a crime _many_ people take plea bargains for good game-theoretic reasons. You can tell yourself that you'd definitely fight it until the end, but often that'd be idiotic, and traumatic if you really did.

These kinds of things tend to get used disproportionally against the poor and the marginalized.