Brother I downloaded the zip file and there wasn't any apk file to download. Basically I just had the files of the game and not the game. (android btw)
The problem is explained in the FAQ page in the Wiki:
There is no Android version of the game. However, it is possible to play on Android using the PC version under emulation. Instructions are in the itch.io page, under the heading “How to play on Android”. It goes the same way other Renpy games are played on Android using joiplay. Youtube has videos showing how it is done.