40% of mobile phone users surveyed across 23 countries claim to regularly compare prices while in-store.
In-app advertising models grew in popularity between November 2013 and November 2014.
Ebook sales will reach $4.25 billion in 2015, accounting for 43.3% of US mobile download and in-app revenues in 2015.
US mobile game revenues—including both downloads and in-app purchases—will grow 16.5% this year to reach $3.04 billion.
98% of Google Play store revenues and 92% of Apple App Store revenues in November 2013 came from free-to-download apps that offered in-app items for purchase.