Guide to move save data from Android to PC:
I saw some people ask for this in the comments and couldn't find an answer, so I did it myself. The game data is NOT located in android/data. So you need to go deeper. I used linux to do this, I'm not sure how to do this on Windows.
Make sure you have turned on "USB Debugging" in developer settings in system settings. Phones ship with this menu hidden so you may want to google how to enable it.
Note: USB Debugging has some security implications. If you don't know what it enables, you should turn it off after this operation.
Connect your phone to your PC with a USB cable. Make sure your phone is in "File Transfer" mode.
On your terminal, run "adb shell". I had to run it twice to get in. You should be prompted on your phone to give permission. Grant permission, and idk, run "adb shell" again. If successfull, the PS1 prompt will look different.
Now that you're in your phone's shell, run "run-as com.example.rec". If all is going well, your current working directory should look something like "/data/user/0/com.example.rec"
Run "cd files" and "ls". You will see contents in the "files" folder. Autosave file is savegame0.save, Save slot 1 is savegame1.save, so on and so forth.
I was trying to transfer my Save in the first slot. If you want another slot, modify your commands accordingly.
Run "cp savegame1.save /storage/emulated/0/Download". This will move the safe file to your phone's Downloads folder.
You can now freely move this save file. I continued in the terminal. Press CTRL+D twice to leave your phone's shell. Run "adb pull /storage/emulated/0/Download/savegame1.save". This will copy the save file to your computer at your current working directory. Yay! If you copied the savefile to another location, you need to modify this command to match it.
Anyway, you can now put this save file on your PC installation, and play. On Windows, the save file location is Users/<user>/AppData/Roaming/Godot/app_userdata/REC
per the wiki. Paste it there. I run the game with Lutris using wine. The save file is in the same location inside your prefix. If you don't have a prefix, make a prefix. I hope this helps you.