Revolut launches Group Vaults as an alternative to joint accounts

Fintech startup Revolut is making vaults collaborative. You can now create a vault with someone else and use it like a normal vault.
Originally, vaults were an alternative to savings accounts without any interest rate. You could create vault in any currency (including supported cryptocurrencies) and set some money aside. You can round up your expenses and add change to a vault, program regular transfers to your vault or add money whenever you feel like it.
If vaults are like a Word document, gro