Before you can use an editor link, you need to find your save file. This is the hardest part for most Android users due to "Scoped Storage" restrictions in newer Android versions.
You can find the Ren'Py Save Editor by Ketsuban on GitHub: https://github.com/Ketsuban/RenPy-Save-Editor renpy save editor for android link
(Points deducted for not being a seamless integrated app, but points awarded for raw power and reliability.) Before you can use an editor link, you