I find the Spending tab a really useful way to keep track of my outgoings. Unlike some people on another thread, I actually like the fact that all my outgoings are included as spending. That may be just me!
What about having a separate tab for Income as well? I have bits of income coming in during the month so it would be really helpful to have them added up for me, so I can balance monthly income and monthly spending?
An income tab could also be a great place to put incoming payments from friends, for example, or made using Monzo.me?