Today is all about App Indexing day where we will only cover topics on Google App Indexing. Why? Because we launched our Search Engine Roundtable app for iOS (free download) and Android (free download) - please download it.
In the Google+ Hangout on App Indexing with Google's Mariya Moeva, John Mueller and Krzysztof Muzyka, Mariya Moeva explained that iOS apps currently do not get the ranking boost for using the App Indexing API. They do get the original app ranking boost but not the second one for using the API.
Why? Simply because Google hasn't implemented it yet. Mariya Moeva said "purely because they are not using it."
The question was asked at the 22:04 minute mark:
Question: Do iOS app-indexed webpages get evaluation boost as Android ones do?
Answer: To my understanding, they will get the original boost we announced in April but they would not get the App Indexing API boost, purely because they are not using it.
Here is the video embed at the start time:
Forum discussion at Google+.