We use open banking to power two of the features you may see on the TotallyMoney app: Monitor and Affordability insights.
At the moment, the Monitor feature only works with one account, so please choose the one most of your bills come out of to give you an overview of your available funds. This may change in the future. However, for Affordability insights, you can connect multiple accounts which helps to give you a bigger and better view of your affordability.
You can see which of your connected bank accounts are being analysed for both features by clicking on the Account icon in the top right corner on the TotallyMoney app and selecting 'Connected bank accounts'. From here, you should be able to see either a 'Monitor' or 'Affordability' flag on your connected accounts, which indicates which feature the account is being analysed on.