itch.io

Check out the pinned/stickied thread on the main GT page for the details. Nothing to give access to, it's all there in the game, there's no encryption or anything, it's just text files with formatting. You have to spend a little time familiarizing yourself with RPGMaker to learn what's where, but it isn't overly complex. I usually recommend Translator++, as it makes it easier to keep track of what you're doing and where you are in the project, but nothing's stopping you from editing the raw text files if you're a masochist.

If you're considering a mobile mod rather than translation though I'd recommend against it. The game does some file I/O stuff for the DataCrystal system that just flat-out will not work on mobile, and I'm not sure an alternative plugin exists, so unless you know both Android, iPhone and Javascript well enough to code your own RPGMaker plugin...yeah.