BusyMac released BusyCal 3.4.3 and BusyContacts 1.2.16, with both apps bringing macOS 10.14 Mojave compatibility fixes and adding the capability to change the update frequency in Preferences > Updates.
BusyCal 3.4.3 fixed a bug where pasting notes with links would turn the rest of the content into rich text, and ensured that delegate users for other Exchange or Office 365 accounts could no longer see non-meeting notifications in their Inbox. BusyContacts 1.2.16 improved handling of Google account keychain authentication errors, resolved an issue with the activity panel in Mojave not showing emails or messages, and improved handling of duplicate and conflicting responses from some CardDAV servers.
Shortly after these releases, BusyMac issued BusyCal 3.4.4 and BusyContacts 1.2.17 to provide compatibility with Google’s recent backend changes, which were causing crashes on launch, and to fix Mojave-related bugs. BusyMac notes that Dark mode support will come in later releases. ($49.99 new for BusyCal from BusyMac or the Mac App Store, free update, 13.8 MB, release notes, macOS 10.11+; $49.99 new for BusyContacts from BusyMac or the Mac App Store, free update, 7.8 MB, release notes, macOS 10.11+)