Amazon iPhone App Missing Sales Rank That is Available in Mobile Web

Discovered another case of a disparity between a product’s iPhone app and the same product’s Safari mobile web app on the iPhone. I was browsing for some books on the Amazon iPhone app and was curious to see what the Amazon Sales Rank of a particular book was. Everywhere I looked in the product description, I was surprised to see that I could not find it. So I turned to the mobile web app to see if it existed there. Lo and behold, I found the sales rank in the product details section of the mobile web app product page:

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Then I returned to the iPhone app to see if I could find it in the same section. Surprisingly, I found the same section with all of the same pieces of information for the book, except for one: the sales rank.

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I’m fairly certain that this is a bug and that if Amazon has made the decision to show this piece of information to the user in the mobile web view, there’s no reason not to show the same information in the iPhone app view. Especially since they are showing all other pieces of information (i.e. ISBN numbers, number of pages, shipping weight, etc.) in the same Product Details view.