It's not a renpy file, it's a folder, if you don't have the renpy folder on your phone the game is installed in Android/data/my.n.family ^^
So the easiest way to do this is to start 0.21, then start a new game ( i know you get the error stuff ) , then save ( click on save on the bottom ). After that the correct folders should be there already ( in my.n.family ). Then just copy your latest save and paste it into the saves folder and you're good to go.
Hello. I am trying to load my previous saves into 0.21, but I keep getting errors. Is there anyway to fix this please? I am at the part where I have just talked to Grandma. Well, that's as far as I got on 0.14. I have tried my many previous saves, but they all cause errors. Downloaded 0.14 and the game saves load with no issues, so I know they are not corrupted. Thank you .