As far as the App Indexing Stats are concerned, only 30% out of 84% Android apps were found to be using Google’s App Indexing, whereas only 19% out of the total of 88% iOS apps were found to be using Google’s App Indexing.
A recent study suggested that only 20% of iOS apps & 30% of Android apps are allowing app indexing.
What is app indexing?
When you search for something on Google, it shows content from the websites as well as from the apps that you have installed. And if you are an android user, it will show content even from the apps that you haven’t installed yet.