Agenda supports sync between devices using iCloud. In order to sync, it is important to sign in to iCloud with the same account on each device, in the Settings or System Preferences, and also make sure that iCloud Drive is turned on for each device.
Sync in Agenda should be enabled by default. If it has been disabled, simply go to the Preferences in the app and check the option Sync notes between devices with iCloud.
To disable iCloud sync, go to the Preferences in Agenda, and uncheck Sync notes between devices with iCloud. You will be asked if you want to remove the data from iCloud. If you don’t have any other devices you want to keep syncing, you can remove the cloud data. If you want some other devices to keep syncing via iCloud, don’t remove the data.
Clearing Data from iCloud
To clear data from iCloud, simply disable the sync in the Agenda Preferences, and you will be asked if you want to remove the data from the cloud.
If you want to permanently remove the data, make sure other devices also have the sync turned off.