I've build some mobile apps for iOS and Android.
Theses apps load webpages (url are loaded in the mobile application) when you click on icons tab.
Is there a way in php or js to get a unique identifier, in order to know how many new apps are installed in real time?
EDIT: I want to know if there is a way on php/js to do this without modifying the mobile apps, so it's not a duplicate of some questions already posted.