Shared Spaces are only available for N26 Smart, Go, and Metal plans. Each Shared Space can have up to 10 participants, but only the person who opened the Space is the legal owner of the funds within it.
Joint accounts are available to all N26 customers, regardless of their plan. They have a dedicated IBAN, and can be linked to a virtual or physical card in order to make direct payments. Only two people can share a joint account, but both account holders have full legal ownership of the shared funds within it.