I love the app but the passcode is a bit buggy, which is a big issue for me because the privacy of my dreams is essential. When I open the app it takes a moment for the lock screen to pop up, leaving the page I was on open for reading which negates that purpose of the feature. Sometimes it gives me the option to type in the passcode but the lock screen isn't there, I'm not sure how to explain it. I have to refresh the app to get into it. (I use an iphone 6, iOS 9.2)