Shipping Estimate App Based on Actual Past Data

I'm looking for an app that uses the data from the difference between order date and fulfilled date (does not have to read tracking info, but that would be a bonus) to make a realistic estimate of shipping time based on actual data by product.  Anyone?  Seems entirely possible since the order data and time when an order is marked as fulfilled is available (I realize this is a conservative shipping time estimate).

High ticket item store owner and Google Shopping Ads specialist.
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