Day One introduces Shared Journals for Mac, allowing seamless co-authoring and editing entries. Requires Day One for Mac version 2025.6+. New features include sidebar access, entry editing, drag-and-drop functionality, and move confirmation. Creating journals, inviting members, commenting, and viewing member info are not yet available. Beta feedback encouraged for future improvements.
https://dayoneapp.com/releases/introducing-shared-journals-on-mac-beta/