In Kladana we have report Purchasing Management where you can track sales history and plan your inventory for the future. (Purchase ->Purchasing Management)
Days of Stockpile - it shows how many days you will have the necessary amount of product according to Sales per day.
Stockpile - shows the quantity of products that will be sold in the forecast period that you set for the report.
To supply - how much you need to supply according to product availability.
You can create a Purchase order directly from this report. It will automatically fill in product details and the necessary quantity.