Journal app features
The Journal app on iOS is a good start and I have some suggestions and requests:
1) Backup and Export, I appreciate the attention to privacy and security. I would recommend iCloud backup as default as there are no other recovery options if the app is deleted, iPhone lost, etc. We should also have secure export option.
2) Search would be useful as frequent entries will amass lots to scroll through to find previous entries. Search by tags and date range is useful too.
3) Paste, I can understand that perhaps it's a privacy concern to not allow Copy in the editor, but I often find snippets or have things I've written elsewhere that I'd like to include directly as text in the entry. Attachments and photos and links are useful but I really want to collect all my thoughts.
4) iCloud, iPad and Mac, I find that typing out lengthy thoughts on the iPhone is tedious and would appreciate an iCloud web app or a native app on Mac and/or iPad.