if you sub via substar like me, there is no integration yet, so you are kind of forced to use the .apk to access the backer content on android. i'm crazy, so i spend my main 15-dollar sub on substar for the docs and then just kind of pay five on patreon for ease of access. just plugging the substar backer code into steam works, but i play crossplatform regularly and am often without wi-fi so the .apk works best for mobile