The app is not by Apple. According to their web site your data is stored by the maker of the app on AWS (Amazon) cloud servers, so it's not in Apple's hands. Just like you are subject to Facebook's (and not Apple's) privacy policies when you use the Facebook app. I have no idea how trustworthy this company is, but I'd be very hesitant to store private journal entries in any cloud unless I can use true end-to-end encryption (which is not the case for Day One from what I can see).I haven't read the terms and conditions, but isn't Apple very much in the debate of pro-privacy right now? Would seem weird for them to fight the FBI to keep phone's locked, while selling your journal data...