Greater analytics and no ad-blocking. I took a quick look at the Android app permisions Identity: add or remove accounts; find accounts on the device Contacts

Greater analytics and no ad-blocking. I took a quick look at the Android app permisions Identity: add or remove accounts; find accounts on the device Contacts: find accounts on the device Other: use accounts on the device; toggle sync on and off; run at startup; read Google service configuration; draw over other apps (I deleted a lot of stuff but left the things that Reddit might find more useful). Compare that to the information about the user Reddit would have via a web login.