The app
Spend
What the cost page is counting.
Spend reads the jobs table. It shows how many splits ran in the browser, how many ran on the server, how many seconds those server jobs took, an estimated dollar figure for that server time, and how many megabytes are stored. Only the site owner can open it.
A browser split costs nothing on this page. A server split is the line that can grow. Payments are off. The page is a meter, not a checkout. Nobody is charged from here.
On a local machine the numbers reset when the app process restarts, because the local store lives in memory and on disk for that run. A hosted database keeps them.