Tuesday, September 01, 2015
Starting today, we'll be updating the Mobile-Friendly Test to indicate that sites should avoid showing app install interstitials that hide a significant amount of content on the transition from the search result page. The Mobile Usability report in Search Console will show webmasters the number of pages across their site that have this issue.
After November 1, mobile web pages that show an app install interstitial that hides a significant amount of content on the transition from the search result page will no longer be considered mobile-friendly. This does not affect other types of interstitials. As an alternative to app install interstitials, browsers provide ways to promote an app that are more user-friendly.
App install interstitials that hide a significant amount of content provide a bad search experience
App install banners are less intrusive and preferred
App install banners are supported by Safari (as Smart Banners) and Chrome (as Native App Install Banners). Banners provide a consistent user interface for promoting an app and provide the user with the ability to control their browsing experience. Webmasters can also use their own implementations of app install banners as long as they don't block searchers from viewing the page's content.
If you have any questions, we're always happy to chat in the Webmaster Central Forum.
Posted by Daniel Bathgate, Software Engineer, Google Search.