How do I find my app's exact rating in the iOS App Store?

On the iOS App Store, an app has a rating that is precise to ½ a star. How can I get a more precise rating? Does it exist in iTunes connect somewhere?

I noticed that the exact rating for the current version of any app is available on that app's page in the source. You can print it in the console with the following code:

console.log( document.evaluate('//span[@itemprop="ratingValue"]',
                               document, 
                               null,
                               XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, 
                               null).snapshotItem(0).textContent )

However, I'd like to find the exact value of the All Versions rating.

Solution

iTunes Search API does not give you enough information (Nov '18) for such detailed rating. However, it is possible to scrape that information from the web page (as you already did) but I would suggest depending on embedded Javascript object instead where you can get "ratingCountList" which contains a count for every star-rating.