Automation APP

Hello, I’m trying to create an app to control expenses. I have two expense tables and expense summary tables where expenses are calculated per month. How can I do it so that after adding expenses to the monthly summary table, I can fetch the values ​​for that month and make the sum automatically?

Use a query and a rollup column.

Can you show us how you’re structuring your expense summary tables? Is it a list of months & categories or something else?