[lo_zamoyski]

Prayer can be both public and private. It's more than just the danger of being exposed as a Christian to a regime that is hostile to it and persecuting Christians. The seal of confession is an obvious good example of why privacy is important. Everyone standing in line to the confessional knows you're Catholic and that you're going to confession. They don't know what you're confessing to.

Obviously, you shouldn't be storing confessions in an app, but the principle is that privacy goes beyond the danger of persecution.