I had to down load a app store call aptoide, before I could find Joiplay to download. Also download the add on renpy. Once on Joiplay look for the ➕ and then follow what it wants. make sure to use the .py not the .exe file
sorry for not replying earlier. Not sure if sorted it but I can get both .py and .exe version to run. Could be requiring ren'py plugin for joiplay. If got and not seeing loading... or that takes forever then I dont know