There's no android apk.
You need to download Joiplay [https://play.google.com/store/apps/details?id=cyou.joiplay.joiplay&hl=es&gl=US&r...] and the Renpy plugin [https://play.google.com/store/apps/details?id=cyou.joiplay.renpy&hl=es&gl=US&ref...]
This will work like an emulator, after downloading and decompressing the game you go into Joiplay and select the .exe file to play.