"It looks like you haven't installed the World Community Grid software yet" appeared as a notification on one of my Android devices (an Android 15 tablet). Clicking on it takes me to the WCG version of the BOINC download page. Except, I have BOINC 8.2.25 installed already, and one of my Android devices has already returned enough work to have 96 points of BOINC credit. (Admittedly, the tablet has no listed credit yet, but it HAS already downloaded some work.)