Can someone explain the graph?

I have a separate app for tracking my spending across banks, PayPal, and wallets, so that might be one reason why I’m not using it. I really do like the spending tab though. I like setting visible limits to each category (not so much busting them almost every month) but my budgeting mostly is just me telling myself that I don’t need something :woman_shrugging:t2:

Starling pulse is less visually appealing imo, but after you swipe past that annoying screen on there, it is just transactions which is great. If the pulse graph could integrate more info upon tapping like this amazing design project suggested (Theoretical Design Ideas for Master's Project) I would appreciate it a lot better.