Well done Kiwibank! They’ve just released an iPhone version of online banking.
It’s very similar to the Xero for iPhone version, letting you see your account balances and recent transactions. It also lets you transfer money between your Kiwibank accounts.
Of course, the big advantage of using Xero on your iPhone is that you have access to transaction data from all your banking providers, plus all of your invoicing data, to give you a complete cash flow overview.