First off id just like to say i have no idea what category this would go into…
But the title says it all it would be a cool idea kinda like a basic hex edit and semi cheat engine but without the risk of downloading viruses on a phone and from a safe source =) cheers.
This is only possible on rooted/jailbroken devices, as far as I know. It’s too small of an audience to justify all that work, but it sounds like a fun project.