Maybe I am missing it, but I see on the Home Screen, you can see your current balance. When you tap the arrow, you see historic transactions see at a glance the balance at the time after the transaction.
This would be useful if you could. My previous bank account done this.
I have just raised a query with Starling regarding a failed direct debit, and this would have helped me, as I could have seen at a glance the balance on that day, or the balance after the last transaction before that day.