Our account gives us 2000 API calls / day.
However, I looked at the graph provided by QuickBase and it shows that most days we are at ~200,000 calls / day.
I've never noticed any interruptions in our services that use the APIs, so what actually happens when you exceed the limit? Does it slow down the request/response time or something?
But regardless, all that would happen is that a QuickBase rep may choose to contact you to make ask you to buy more API calls. Since QuickBase is single threaded, I suppose that in theory, a lot of API calls will slow down the app a bit for your users. But whether users perceive a difference in their response time due to this level of APIs would depend on how large and complex your app is in terms of # of records and relationships