I cannot be sure if an item is missing from the store. So, having an inventory management system which has a report of when and how many stock additions of a particular item were made and when the sales of those items were made would be of immense help, thanks.

Thank you for your suggestion. We will add it to our suggestion list.

Now Loyverse has 'Advanced Inventory' add-on. By which you can do the stock adjustment, inventory re-count and all these actions will be recorded in inventory history for each item.