There is a way for you to preserve save files on android, as pointed out by someone on my discord, but I did say in the dev log I posted for 0.2.0 that people may need to re-install the game. Again, sorry for any inconvenience I've caused you.
Ah okay. I'll have to check that out in the future. And no worries. I'm a bit annoyed that I have to repeat everything but it's a really good story so I don't mind it too much
Here this is my save files from other VN games if you want to save the file just add anything in the end of the file name like this() so it doesn't delete when you are deleting the game