The Billing History table now brings a full view of your monthly billing metrics to the dashboard, broken out by app and by platform. The chart includes the top 20 apps that contribute to your monthly bill. For customers with more than 20 development apps, complete billing information is available via the CSV downloand feature.
This layout will help you more easily track billing information over time and see how apps (and plaftorms) compare head-to-head.
Get more information in the docs for Managing Your Account.