Sync settings
A bloon is essentially a folder, the contents of which can be synced across your devices, as well as those of other members of the bloon.
There are two sync settings, conditional and unconditional. Each bloon has its own independent sync setting not only for each user, but for each device. The user decides exactly how the contents of a particular bloon should sync on a particular device.
Sync settings are accessed through the "Syncing" tab in bloon settings.
For more on sync settings:
Default sync settings
When you join or create a bloon, your sync settings for that bloon (and for each particular device) are set to a default setting at first. You can specify what this default setting should be in basic settings.