I'm not sure about the volume, however, I know about the quality. This should be an objective adequate review of the product you 100% bought.
Purchase of goods will be visible in the application. I even think that you can not write a review about a product that is not listed in your shopping list. I would do that.
So it is, the application will display the fact of purchase of the goods, the time and place of purchase. Accordingly, a review of the product will be available in that case.