Dashboard with automatic estimate for online store

I have completed the backend and frontend. Using the API, the script retrieves advertising expenses and orders, also accounts for operational costs, and based on all this, calculates the estimate. All data is written to a Postgres database, so you can view data for any period. There is a currency change, interface settings for each project separately, and some additional functions. It works completely autonomously and saves the client a lot of money on the estimate. It turned out to be a very convenient service.