hey, have to point out that there is no way to open the menu on Android, which means no way to save so it's pretty pointless as of now, (also tried running the PC version on Joyplay but that didn't work...)
Viewing post in The Happy Heifer Cafe comments
So Joiplay is a bit finicky, you can play this on it but you need to get the latest version of the app and renpy plugin from their patreon. Here's the link to the newest version https://www.patreon.com/posts/joiplay-1-20-540-112995251
Ignore the alert about a better version of the plugin and make sure one of the buttons on the virtual gamepad is escape and you're good to go