title: Best BAAS for sharing private database records between users?
body: <p>In essence, I'm building a private journaling app for iOS using Swift that will have a social feature. When creating a new entry, the user can choose to share the entry with specified friends from a friends list. The friend will receive a notification of the new entry, and it will be added to their own journal. The friend can later choose to accept or deny addition of the entry from their personal journal after review. Users won't be able to see each other's journals, they will only be able to share(add) entries to their friend's journals.</p>
  
  <p>While I'd prefer to use iCloud, CloudKit won't allow me to share the entry records between users if I store them in a private database, and the information will be too sensitive to plop into the public database. CKRecordZones would be helpful, but they are only available for organizing a private database, so they will do me no good with sharing entries.</p>
  
  <p>Can the privatized entry sharing I want be accomplished through Parse or perhaps another service I'm unaware of? Or will I have to build a custom backend to accomplish this? </p>
  
  <p>Any advice would be greatly appreciated!!!</p>