>> It makes you wonder why certain websites even have an app Good article, but the answer to the point above always seemed obviously about being better able to

>> It makes you wonder why certain websites even have an app Good article, but the answer to the point above always seemed obviously about being better able to identify users and pull their data - this is why so many apps offer functions that go through your contact list and photos (they can pull the contacts to work out who you know and hash image / other files so other apps can be sure they're installing on the same phone)